Wiring Diagram for 1990-1994 DSM's

Always check the polarity of wires before tapping into them, as the following table may be incorrect for some wires.

Vehicle Wire Wire Color Wire Location or Note
Constant 12 Volts White Ignition Switch Harness
Ignition 12 Volts Black/White Ignition Switch Harness
Starter Black/Yellow Ignition Switch Harness
Parking Lamp Green/White (+) at relay
Dome Light Green/Red (-) Driv pin switch or dome light
Trunk pin switch Black (-) Luggage compartment light or switch
Trunk release N/A (must add actuator)
Radiator Fan Blue/White (+) Radiator fan
Power antenna White/Black (+) Radio
OEM Alarm Arm N/A  
OEM Alarm Disarm Brn/White, Brn/Blk (-) Either kick panel
Tie to ground to permanently disable the alarm
OEM horn Green/Black (-) Steering column harness, only on relay
Headlights Red/Blue (-) Underhood relay or headlights
Ign Key Warning Yellow/Green (+) Steering column harness
 
Door Lock Brown/White **at relays on relay block to left of steering column (these are negative trigger wires)**
Door Unlock Brown/Blue
 
Window Driver UP Red At driver's switch (these need relays to apply 12V to the respective wire to move the window up or down)
Window Driver DOWN Green
Window Pass UP Red/Blue
Window Pass DOWN Black/Blue
 
Ignition #2 Blue/Black Ignition Switch Harness (heater/AC)
Accessory Blue Ignition Switch Harness (wiper/radio)
 
Tach signal White At tach filter or power transistor (see note 170)
Reverse Light Red/Blue (+) at switch on top of transaxle
 
Neutral Safety NOT GRND TYPE OEM switch opens starter circuit
Brake Light Green (+) switch on brake pedal bracket
 
Driver front speaker White/Blue (+)
Black/Blue (-)
 
Pass front speaker White/Red (+)
Black/Red (-)
 
Driver Rear speaker Yellow/Blue (+)
Gray/Blue (-)
 
Pass Rear speaker Yellow/Red (+)
Gray/Red (-)
 
Notes:

    170  1.8 liter - tach filter on front center of engine, has 3 pin plug,
         white is filtered signal to tach, white/black is signal from coil.
      
         91-93 2.0 liter and 2.0 turbo - power transistor on passenger rear
         of engine below coil, on 8 pin plug, white wire at pin #4.  
         1990 2.0 liters used filter same as 1.8 liter.