Ford  F-Series 1987-1993
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   YELLOW (+)   @ IGNITION SWITCH HARNESS
 STARTER  RED/LIGHT BLUE (+)  @ IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  RED/LIGHT GREEN (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  BLACK/LIGHT GREEN (+)  @ IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  GRAY/YELLOW (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  BROWN (+)  @ HEADLIGHT SWITCH or in DRIVERS KICK PANEL
 POWER LOCK  PINK/GREEN (TYPE C), See NOTE #1  IN EITHER KICK PANEL
 POWER UNLOCK  PINK/YELLOW OR BLACK/ORANGE (TYPE C)  IN EITHER KICK PANEL
 DOOR TRIGGER  BLACK/BLUE (+)  IN DRIVERS KICK PANEL
 DOMELIGHT SUPERVISION  USE DOOR TRIGGER  
 TRUNK RELEASE  N/A  
 SLIDING POWER DOOR  N/A  
 HORN  DARK BLUE (-)  @ STEERING COLUMN HARNESS
 TACH  TAN/YELLOW, See NOTE #2  @ IGNITON COIL
 WAIT TO START LIGHT  BLACK/PINK (-)  See NOTE #3
 BRAKE  LIGHT GREEN (+)  
 FACTORY ALARM DISARM   N/A  
 ANTI-THEFT  N/A  
 EXTRA INFORMATION
 NOTE #1: On this TYPE C System you MUST TEST from the DRIVERS DOOR Switch only when testing for SWITCH and MOTOR wires. NOTE #2: The DIESEL TACH wire is a WHITE/BLACK (AC) at the ALTERNATOR. NOTE #3: The WAIT TO START wire is at the WAIT to START LIGHT on the dash or at the GLOW PLUG CONTROLLER on the center, rear of the engine.