MUSTANG / MUSTANG GT      1987-1994
WIRE COLORS LOCATION
12 VOLTS CONSTANT

YELLOW (X2)

IGNITION SWITCH HARNESS
IGNITION 1 RED/LIGHT GREEN (+) IGNITION SWITCH HARNESS
IGNITION 2 BLACK/GREEN (+) IGNITION SWITCH HARNESS
ACCESSORY/HEATER BLOWER GRAY/YELLOW (+) (2) wire use only 1 IGNITION SWITCH HARNESS
STARTER WHITE/PINK or RED/BLUE (+) IGNITION SWITCH HARNESS
PARKING LIGHTS (+) BROWN at HEADLIGHT SWITCH or in DRIVERS KICK PANEL
DOME LIGHT BLACK/LIGHT BLUE (+) at DOOR PIN SWITCH in KICK PANEL
POWER DOOR LOCK PINK/LIGHT GREEN in EITHER KICK PANEL (TYPE "C")
POWER DOOR UNLOCK PINK/YELLOW in EITHER KICK PANEL (TYPE "C")
TRUNK/HATCH RELEASE PURPLE/YELLOW (+) at RELEASE SWITCH
TACH SENSOR TAN/YELLOW at IGNITION COIL(4-CYL) on engine, and  at DIAGNOSTIC PLUG(V-8) Drivers Shock tower under hood.

BRAKE

RED/LIGHT GREEN (+) at SWITCH ABOVE BRAKE PEDAL

HORN

YELLOW/LIGHT GREEN (-)

at STEERING COLUMN HARNESS