Panther Platform Wire Color Code Reference — 2003–2011 Ford, Lincoln & Mercury
Every wire in a 2003–2011 Panther Platform vehicle — Crown Victoria, Grand Marquis, Town Car, Marauder — is labeled with a two-letter color abbreviation in the factory wiring diagrams. If you're staring at a PCM connector chart, a BJB fuse diagram, or a splice location and can't work out what DB/YE or TN/OG means on the wire in your hand, this is the reference you need. Ford uses a consistent two-part notation across all its wiring documentation for this era: the first abbreviation is the base wire insulation color, the second (when present, separated by a slash) is the tracer stripe color. A wire listed as BK/WH is black insulation with a white stripe. A wire listed as just BK is solid black with no stripe. That notation appears in the factory service manual (FSM), ALLDATA, Mitchell1, and in every data sheet on this site. Understanding it is the baseline for doing any electrical diagnosis or repair on these cars.
The Panther platform's wiring architecture runs on a circuit numbering system alongside the color code. Each wire in the harness carries both a color designation and a circuit number — for example, circuit 570 is always the chassis ground return, and it runs BK/WH at 18 gauge throughout the PCM harness. When you see a circuit number in a wiring diagram, you can trace that circuit across multiple connectors even if the physical color is hard to see due to age, heat damage, or tape wrapping. Both pieces of information matter for diagnosis. This reference covers the full Ford base color set used across all Panther platform wiring, the tracer system, the circuit letter prefix codes used in Ford's connector diagrams, and the color patterns that show up most frequently in the BJB, CJB, and PCM harnesses specific to these vehicles.
Resources:
- Panther Platform OBD-2 Diagnostic Trouble Codes List
- 2003–2011 Panther Platform Resources & Manuals List
- 2005 Ford Crown Victoria Info Systems & Data Sheets
In this post:
- Ford Wire Color Abbreviations — Full Reference Table
- How the Two-Part Color Notation Works
- Ford Circuit Letter Prefix Codes
- Wire Gauge Reference for Panther Platform Harnesses
- High-Frequency Color Patterns in Panther Platform Wiring
- PCM Harness Color Patterns (C175T / C175B / C175E)
- Common Diagnostic Wire Colors by System
- Sources
Ford Wire Color Abbreviations — Full Reference Table
The table below covers every base color abbreviation used in Ford's wiring documentation for the 2003–2011 model years. These are the same codes you'll find printed on wire insulation, listed in the factory service manual legend, and used in every BJB, CJB, and PCM data sheet on this site. "NA" (Natural) is an off-white/cream color that appears primarily in older harnesses and some interior circuits — on Panthers it's rare but present in a few body harness runs. "SR" (Silver) appears occasionally in shielded cable notation. All other colors below are active in the Panther platform harnesses.
| Abbreviation | Full Color Name | Notes / Common Use on Panther Platform |
|---|---|---|
| BK | Black | Ground, signal return, chassis reference. The most common solid wire color in the harness. BK/WH is the standard ground cluster color at PCM C175B pins 47–50 (circuit 570). |
| BN | Brown | Used in specific sensor and body circuits. Appears in Town Car harness on select signal lines. Less common than BK but present in BJB and body wiring. |
| BR | Brown (alternate) | Used interchangeably with BN in some Ford documentation depending on model year. On PCM diagrams, BR appears in sensor signal lines — BR/LB, BR/LG, BR/WH, BR/YE are all active in the C175E connector. |
| DB | Dark Blue | Transmission and sensor circuits. DB/YE (circuit 136) is the output shaft speed sensor signal at C175T pin 3 across all Panther models 2005–2011. |
| DG | Dark Green | Sensor signals, speed, and fuel system circuits. DG/WH (circuit 970) is the turbine shaft speed sensor at C175T pin 15. DG alone appears in ground and switched-output circuits. |
| GN | Green | Body and lighting circuits. Less common in PCM harness on Panthers; more prevalent in door modules, courtesy lights, and exterior lighting circuits in the CJB harness. |
| GY | Gray | Signal return, sensor, and control circuits. GY/RD (circuit 359) is the signal return line at C175T pin 41 — one of the most consistent wires across all Panther PCM connectors. GY/BK is the vehicle speed signal on earlier years (C175T pin 37). |
| LB | Light Blue | Transmission range and sensor circuits. LB/BK (circuit 1145) is the DTR sensor TR2 signal at C175T pin 17 on all 2005–2011 Panther models. LB alone appears on ETC reference and accelerator pedal position lines. |
| LG | Light Green | Sensor signals, fuel, and indicator circuits. LG/WH, LG/BK, LG/OG, and LG/YE all appear in the C175E connector across multiple years. PK/LG is the check engine indicator signal on 2005 Grand Marquis. |
| NA | Natural (cream/off-white) | Rare on 2003–2011 Panthers. Appears in some interior body harness runs and older-generation Ford connectors. If you encounter it, treat it as a non-ground, non-power signal wire and verify with the FSM. |
| OG | Orange | Power feeds, shift solenoids, sensor outputs. OG/YE (circuit 237) is the shift solenoid A control at C175T pin 42 across all years. OG/BK (circuit 923) is the transmission fluid temperature sensor. OG/LB, OG/RD, and OG/BK all appear frequently in the PCM harness. |
| PK | Pink | Switched ignition feeds, indicator signals, protection circuits. PK/LB (circuit 883) is the low charge protection switch on 2005–2006 Grand Marquis. PK/WH and PK/LG appear in CJB and indicator circuits. |
| RD | Red | Battery feeds, power distribution, oxygen sensor inputs. RD/LG (circuit 392) is the HO2S bank 1 sensor 2 input at C175T pin 24. Solid RD wires are typically unfused battery voltage — do not probe without confirming the circuit first. |
| SR | Silver | Appears in shielded cable notation and some connector view references. Rare in standard harness documentation for Panthers. If listed, verify against the FSM connector view before testing. |
| TN | Tan | SCP data bus, sensor, and heater circuits. TN/OG (circuit 914) is the SCP bus+ line at C175T pin 35 on 2005 models. TN/YE (circuit 390) is the HO2S #22 heater return at C175T pin 48 on 2006+ models. TN appears across all three PCM connectors. |
| VT | Violet (Purple) | Shift solenoids, TCC control, sensor circuits. VT/OG (circuit 315) is the shift solenoid B control at C175T pin 43. VT/YE (circuit 126) is the torque converter clutch solenoid at C175T pin 46. VT/LG appears in oxygen sensor circuits. |
| WH | White | Solenoid control, sensor signals, EPC circuits. WH/YE (circuit 925) is the electronic pressure control solenoid at C175T pin 11 — present across all Panther years. WH/BK (circuit 1143) is the DTR sensor TR4 at C175T pin 28. |
| YE | Yellow | Generator, fuel, and indicator circuits. YE/BK (circuit 1144) is the DTR sensor TR1 at C175T pin 16. Solid YE (circuit 1817) is the generator monitor circuit on 2005–2006 models. YE/WH, YE/LB, YE/RD, and YE/LG all appear across the three PCM connectors. |
How the Two-Part Color Notation Works
Ford's wiring diagrams describe every wire using the format BASE/TRACER. The base color is the primary insulation color of the wire. The tracer is a stripe or band printed along the length of the insulation — it's a secondary color that exists specifically to distinguish wires that would otherwise look identical under the hood. When you see DG/WH, that's a dark green wire with a white stripe. When you see just DG, that's solid dark green with no stripe at all. The slash notation (/) is the standard used in all Ford factory documentation and in every data sheet on this site. Some older community resources use a dash (DG-WH) — same thing, different formatting convention.
The tracer stripe is usually narrow — sometimes a single thin line running the length of the wire, sometimes a spiral band. On 20-plus-year-old wiring, tracers can fade, especially on wires routed near the exhaust, through firewall grommets, or in areas that see heat cycling. A BK/WH wire that's been exposed to 15 years of engine bay heat may look like a solid BK wire by the time you're probing it. When you're unsure, always check the circuit number stamped near connectors or in the FSM rather than relying on color alone. The circuit number doesn't fade.
Some wires in the Panther platform harness are solid-color with no tracer at all — BK, GY, RD, YE, VT, TN, OG, LB. These typically appear on circuits that are unique enough within a given connector that a second color isn't needed to distinguish them. In the PCM harness, solid-color wires tend to show up on high-use circuits like signal return (GY/RD), generator monitor (YE), and shift solenoids. In the BJB and CJB, solid RD wires are almost always unfused or high-current battery feeds — treat those with appropriate caution before probing.
Ford Circuit Letter Prefix Codes
Ford's wiring diagrams also use a letter-prefix system to classify circuits by function. Every circuit number in the factory service manual belongs to a functional category identified by a letter. You'll see these in the "circuit" column of wiring diagrams alongside the color and gauge — for example, a wire might be labeled GY/RD, 359, 20ga. The 359 falls in the 300-series, which maps to the "D" category (diagnostic and communication circuits). Knowing the letter code for a circuit's range gives you a fast cross-check that you're looking at the right system before you start probing. The table below covers the full Ford circuit letter classification system used in the 2003–2011 era wiring documentation.
| Circuit Letter | System / Function Category |
|---|---|
| A | Battery feed — unfused or direct battery voltage circuits |
| B | Brake controls — ABS, brake pedal switch, brake lamp circuits |
| C | Climate controls — A/C, heater, heated seats, heated mirrors, rear defogger |
| D | Diagnostic circuits, communications, antennas — SCP bus, OBD-II DLC, CAN, PATS |
| E | Dimming / illumination — instrument panel lighting, headlamp dimmer, gauge backlighting |
| F | Switched ignition feeds — power present only in Run or Start positions |
| G | Gauges, displays, and body monitoring — fuel gauge, temp gauge, indicator lamps, body sensors, resistive multiplex switches |
| K | Powertrain Control Module — all PCM input/output circuits including fuel injection, ignition, transmission solenoids, O2 sensors, ETC, MAP/MAF, CKP, CMP |
| L | Exterior lighting — headlamps, taillamps, turn signals, backup lamps, headlamp leveling |
| M | Interior and courtesy lighting — dome light, door jamb switches, map lights |
| N | Fuel pump and cooling fan — fuel pump relay, inertia switch, radiator fan relay circuits |
| P | Power options (seats, mirrors, door locks) — recliner, lumbar, power mirror motors |
| Q | Power options (windows, vents, sunroof, trunk, liftgate, sliding doors) |
| R | Restraint systems — airbags, SRS, seat belt pretensioners, occupant detection |
| S | Suspension and steering — electronic suspension, speed-sensitive steering |
| T | Starter, transmission, and transfer case — starter relay, neutral safety, DTR sensor, transmission solenoid feeds |
| V | Speed control — cruise control set/resume, brake release, deactivation switch |
| W | Washer and wiper — front/rear wiper motors, washer pump, wiper relay |
| X | Sound systems and horn — radio, amplifier, speaker circuits, horn relay |
| Z | Grounds — chassis ground, body ground, engine block ground straps, signal return ground |
Notes on the Circuit Letter System
- Letters H, I, J, O, U, and Y are unused (reserved) in Ford's system for this era
- Circuit numbers in the 100s–200s are most commonly K-category (PCM) circuits on Panthers
- Circuit 570 (BK/WH, Z-category) is the chassis ground return throughout the PCM harness
- SCP bus circuits (D-category) on 2005 models are TN/OG (914) and PK/LB (915) at C175T pins 35 and 36
Wire Gauge Reference for Panther Platform Harnesses
Wire gauge in the Panther platform harness follows the American Wire Gauge (AWG) standard. Lower numbers mean thicker wire with higher current capacity. The PCM harness runs almost exclusively on 18 and 20 gauge wire — 20 gauge for signal and control circuits, 18 gauge for heater element circuits (oxygen sensor heaters, EPC solenoid feeds) that carry slightly more current. The BJB runs heavier gauge on its main power distribution feeds — some of the large fuse element wires going into the junction block are 10 or 12 gauge. CJB circuits feeding accessory loads are typically 14–20 gauge depending on the load.
| AWG Gauge | Typical Use in Panther Platform Harness |
|---|---|
| 10 AWG | High-current BJB feeds — battery, alternator, starter circuits. Not in PCM harness. |
| 12 AWG | Heavy-load BJB distribution, main fuse feeds. Rare in interior circuits. |
| 14 AWG | CJB accessory feeds, blower motor, heated seat elements, rear defroster. |
| 16 AWG | Mid-load circuits — fuel pump relay output, cooling fan control, some lighting feeds. |
| 18 AWG | PCM oxygen sensor heater circuits, EPC solenoid feeds, some CJB circuits. Appears at C175T pins 24, 25, 47, 48 and the C175B ground cluster (pins 47–50). |
| 20 AWG | The dominant gauge in the PCM harness. All signal, sensor, and solenoid control wires at C175T, C175B, and C175E run 20 gauge unless noted otherwise in the FSM. |
| 22 AWG | Low-current sensor signals, some data bus circuits. Appears in door module and LCM harnesses. Rare in the main PCM connectors. |
High-Frequency Color Patterns in Panther Platform Wiring
If you spend time with the BJB, CJB, and PCM data sheets across all 31 posts on this site, a set of color patterns becomes obvious fast. Ford reuses the same wire colors for the same functional roles across all three models and across the entire 2003–2011 run. The patterns below aren't universal rules — there are exceptions, and a specific vehicle may have an aftermarket repair or P71 upfit that breaks the pattern — but they hold up across factory documentation for this platform. If you're tracing an unknown wire and it matches one of these patterns, you're in the right neighborhood.
| Wire Color | Circuit # | Consistent Function on Panther Platform |
|---|---|---|
| BK/WH | 570 | PCM chassis ground return. Runs at 18 gauge to C175B pins 47–50. If you have a no-start with no DTCs, voltage drop here is one of the first things to check. |
| GY/RD | 359 | Signal return — the PCM's internal reference ground for sensors. Present at C175T pin 41 on every Panther model, every year, 2005–2011. Not the same as chassis ground — it's a dedicated low-noise return path inside the PCM. |
| DB/YE | 136 | Output shaft speed sensor signal (OSS). C175T pin 3 across all years. If you're getting harsh shifts or the transmission isn't adapting correctly, this is the first OSS-related wire to check for resistance. |
| DG/WH | 970 | Turbine shaft speed sensor signal (TSS). C175T pin 15 on all 2005–2011 Panthers. The TSS feeds real-time torque converter slip data to the PCM — an open or high-resistance circuit here will set a P0741 or P0742 and kill TCC lockup. |
| WH/YE | 925 | Electronic pressure control solenoid (EPC). C175T pin 11 on all years. The EPC is the primary pressure-regulating solenoid in the 4R75W/E. Intermittent open here causes harsh engagement or pressure spikes. |
| OG/YE | 237 | Shift solenoid A (SSA). C175T pin 42. Controls 1–2 and 3–4 shifts. A fault here typically results in a 1–3 skip shift or 2nd gear start on cold operation. |
| VT/OG | 315 | Shift solenoid B (SSB). C175T pin 43. Works in combination with SSA to control all four gear ratios. Failure modes overlap with SSA but tend to affect 2–3 shift quality most noticeably. |
| VT/YE | 126 | Torque converter clutch solenoid (TCC). C175T pin 46. Slip or shudder at highway speed when TCC is commanded on is the primary symptom of a failing TCC solenoid circuit. Check this wire for intermittent opens before condemning the solenoid itself. |
| RD/LG | 392 | HO2S bank 1 sensor 2 input (downstream O2, right bank). C175T pin 24. 18 gauge. An open or contaminated wire here will set P0137 or P0138 and affect long-term fuel trim adaptation. |
| VT/LG | 393 | HO2S bank 2 sensor 2 input (downstream O2, left bank). C175T pin 25. 18 gauge. Same failure behavior as 392 but for the left bank. Both downstream sensors run at 18ga because they also carry heater current. |
| OG/BK | 923 | Transmission fluid temperature sensor (TFT). C175T pin 29. The PCM uses TFT data to adjust shift firmness and TCC engagement strategy. A stuck low reading will cause abnormally firm cold shifts that never normalize. |
| YE/BK | 1144 | Digital transmission range sensor TR1. C175T pin 16. One of four TR signals the PCM uses to confirm gear selector position. All four DTR wires must be correct for the transmission to operate in manual gear selections. |
| LB/BK | 1145 | Digital transmission range sensor TR2. C175T pin 17. Works with TR1, TR3A, and TR4 to map selector position to a binary code the PCM decodes into a gear range. |
PCM Harness Color Patterns (C175T / C175B / C175E)
The Panther platform PCM uses three 50-pin black connectors — C175T (left), C175B (center), and C175E (right). C175T handles transmission control and most engine sensor inputs. C175B carries injector drivers, ignition coil controls, power and ground circuits, and from 2005 forward, the ETC throttle motor and APP sensor circuits. C175E covers upstream O2 sensors, knock sensors, MAF/IAT, MAP, cam and crank position sensors, and the VREF supply lines. The color patterns below describe how Ford allocates colors to functional groups within the harness rather than assigning colors randomly.
| Connector | Dominant Color Groups | What They Cover |
|---|---|---|
| C175T (Left) | DB/YE, DG/WH, OG/YE, VT/OG, VT/YE, WH/YE, OG/BK, YE/BK, LB/BK, RD/BK, WH/BK | Transmission control — OSS, TSS, EPC, shift solenoids A & B, TCC solenoid, DTR sensor signals TR1–TR4, TFT sensor. Also hosts signal return (GY/RD), SCP data bus (2005 only), and downstream O2 sensor inputs. |
| C175B (Center) | BK/WH, GY/RD, WH/LB, RD/PK, BK, PK/LB, GY/BK, GY/OG, LB/RD | Power and ground cluster (pins 47–50 = BK/WH circuit 570), APP sensor reference voltages, ETC inputs (2005+), starter relay control, fuel tank pressure sensor (2007+), PCM power relay feeds. The center connector is the highest-risk connector for ground degradation. |
| C175E (Right) | BR/LB, BR/LG, BR/WH, BR/YE, DG/OG, DG/VT, DG/YE, GY/WH, LG/BK, LG/OG, LG/WH, LG/YE, TN/BK, TN/LB, YE/LG, YE/WH | Engine sensor inputs — upstream HO2S, CKP, CMP, MAF, IAT, MAP, knock sensors, VREF supply to sensors. Brown-based (BR) wires in C175E are typically sensor signal or return lines. Dark green (DG) and light green (LG) tracers appear on CKP, CMP, and related ignition timing circuits. |
Common Diagnostic Wire Colors by System
The table below gives you a fast-reference summary of the wire colors you're most likely to encounter when diagnosing specific systems on a Panther platform vehicle. These are not exhaustive — every system has more wires than listed here — but they cover the circuits that account for the majority of reported electrical failures on Crown Victorias, Grand Marquises, Town Cars, and Marauders from 2003 to 2011. Where a circuit number varies by year or model, the most common assignment is listed. Always cross-reference against the specific model-year data sheet for your vehicle before probing.
| System | Wire Color(s) | What to Test and Why |
|---|---|---|
| PCM Ground | BK/WH (circuit 570) | Resistance from C175B pins 47–50 to chassis ground. High resistance here can cause a cascade of unrelated-looking DTCs across multiple systems. Test before everything else on any PCM-related complaint. |
| PCM Signal Return | GY/RD (circuit 359) | Internal sensor reference ground. Do not use as a chassis ground test point — it's a dedicated low-noise path. An open here will corrupt readings from multiple sensors simultaneously. |
| Ignition coil power (2005+) | RD or OG (switched ignition feed from CJB) | Each coil-on-plug assembly gets a switched B+ feed and a PCM-controlled ground. Individual coil misfires that move between cylinders when coils are swapped are a wiring issue, not always a coil issue — check resistance on the PCM control side wire. |
| Upstream O2 sensors (bank 1 & 2) | BR-series wires at C175E | Upstream sensors feed voltage signals to the PCM for closed-loop fuel control. High resistance on the signal wire causes lean codes (P0171/P0174) that don't clear with a new sensor. Check wiring resistance end-to-end before replacing the sensor. |
| Downstream O2 sensors | RD/LG (circuit 392), VT/LG (circuit 393) | 18 gauge because they carry heater current. An open heater circuit (P0141/P0161) before the sensor reaches operating temp is often a wiring fault at the connector rather than a dead sensor — check the heater supply wire resistance first. |
| Transmission shift solenoids | OG/YE (SSA, circuit 237), VT/OG (SSB, circuit 315) | Both controlled by PCM ground-side switching. Resistance spec for each solenoid is approximately 20–30 ohms measured at the transmission connector. A short to ground on either wire will set a P0750 or P0755 and command limp mode. |
| Fuel pump circuit | YE/WH or GY/BK (feed from inertia switch), BK (pump ground) | Voltage drop from the fuel pump relay to the pump connector under load is the most common cause of a pump that tests good statically but fails to maintain pressure at high demand. Test with the pump running, not just switched on. |
| ETC throttle motor (2005+) | WH/LB and related wires at C175B | The accelerator pedal position (APP) sensor VREF lines and the throttle motor control wires all live at C175B. A P2111 (throttle actuator control system — stuck open) or P2112 (stuck closed) that doesn't clear with a new throttle body is often a C175B connector seal failure allowing moisture in. |
| Anti-theft / PATS | OG/RD (circuit 1269) — anti-theft indicator control | A PATS no-start with the theft lamp blinking at a specific cadence is a key or transceiver fault, not a wiring fault. But a PATS fault that returns immediately after programming is often a broken wire in the transceiver ring harness at the ignition column — check for chafing before reprogramming again. |
| SCP data bus (2003–2006) | TN/OG (circuit 914, SCP+), PK/LB (circuit 915, SCP−) | The Standard Corporate Protocol bus connects the PCM to the instrument cluster, ABS module, and other modules on earlier Panthers. An open on either line will kill communication between modules and may not set an obvious DTC — it'll just cause the cluster to stop receiving data and display dashes. |
Sources
Ford Motor Company Factory Service Manuals (FSM)
The primary source for all wire color abbreviations, circuit numbers, and connector diagrams referenced in this post. Ford published separate Electrical and Vacuum Troubleshooting Manual (EVTM) volumes for each model year of the Panther platform. Wire color codes and abbreviation tables appear in the introduction section of each EVTM. Physical or digital copies are available through Ford dealerships, Helm Inc., and various automotive documentation services.Applicable years: 2003–2011 Crown Victoria, Grand Marquis, Town Car, Marauder
ALLDATA DIY
Subscription-based factory wiring diagram database. Provides full connector views, splice locations, and circuit paths with color codes for all Panther platform model years. ALLDATA is a direct-license source from Ford and reflects the factory documentation without modification. Recommended for anyone doing serious electrical diagnosis on these vehicles.alldata.com/diy
Mitchell1 ProDemand / DIY
An alternative subscription wiring diagram source that covers the full 2003–2011 Panther platform run. Wire colors and circuit numbers are sourced from the same factory documentation as ALLDATA. Useful for cross-referencing if you encounter a discrepancy.mitchell1.com
Riot Mind Studios PCM Data Sheets (BJB, CJB, MPCMData, FPCMData, LPCMData)
The wire color patterns and circuit numbers used throughout this post are sourced directly from the Panther Platform electrical system CSVs maintained by Riot Mind Studios, cross-referenced against factory documentation. These datasets cover all three PCM connectors (C175T, C175B, C175E) for the Mercury Grand Marquis, Ford Crown Victoria, and Lincoln Town Car across 2005–2011. Color and circuit data for individual model years is available in the per-year data sheet posts linked in the cross-reference section below.
Ford Van Wire Color Codes — JustAnswer Technical Reference
Confirmed the standard Ford color abbreviation set (BU, NA, BK, OG, BN, PK, DB, VT, DG, RD, GN, SR, GY, TN, LB, WH, LG, YE) and the two-part base/tracer notation system as used across Ford's wiring documentation. Used as a secondary confirmation source for the abbreviation table in this post.justanswer.com
Ford Circuit Function Code System
The circuit letter prefix system (A through Z, with gaps) documented in this post is sourced from Ford's standardized wiring code identification documentation used across the company's 2000s–2010s vehicle programs. The same letter-code system appears in the Ford E-Series, F-Series, and Panther platform EVTMs of this era, confirming its platform-wide application.Reference: Ford Wiring Code Identification Information, various platform EVTMs
Ford Crown Victoria — Model Year Data Sheets
Lincoln Town Car — Model Year Data Sheets
Mercury Grand Marquis — Model Year Data Sheets
Mercury Marauder — Model Year Data Sheets
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Informational use only. All fuse assignments, relay positions, wire color codes, pin assignments, circuit numbers, connector identifiers, engine specifications, transmission specifications, torque values, maintenance intervals, and technical service bulletin references published on this site are provided for informational and reference purposes only. This data is not a substitute for a factory Ford, Lincoln, or Mercury service manual, an ALLDATA or Mitchell1 subscription, or the judgment of a qualified, licensed automotive technician.
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Model year and trim variation. Fuse assignments, relay types, PCM pin functions, and circuit configurations vary across model years, between trim levels (LX, P71/Police Interceptor, Executive, Signature, GS, LS, HPP, etc.), and in some cases between build dates within the same model year. Data that is accurate for one configuration may be incorrect or inapplicable for another. Always cross-reference this database against a source that is specific to your vehicle's model year, trim level, and build date.
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