1990 Honda Civic Vehicle Wiring Chart and Diagram

Vehicle Wiring Details for a
1990 Honda Civic

Item	Wire Color	Polarity	Wire Location
12V	white/black	Positive (+)	ignition harness
Starter	black/white	Positive (+)	ignition harness
Starter 2	none
Ignition	black/yellow	Positive (+)	ignition harness
2nd Ignition	none
3rd Ignition	none
Accessory	yellow	Positive (+)	ignition harness
Accessory 2	blue/white	Positive (+)	ignition harness
Tachometer	blue		distributor
Power Door (Lock) Wiring Diagram for [Negative (-)] Door Lock	green/white	Negative (-)	in drivers door
Power Door (Unlock) Wiring Diagram for [Negative (-)] Door Unlock	green/red	Negative (-)	in drivers door
Door Trigger	green/red	Negative (-)	low in drivers kick
Dome Supervision Wiring Diagram for [] Dome	use door trigger
Headlights	red/blue	Positive (+)	steering columm
Parklight Positive	red/green	Positive (+)	steering column
Parklight Negative	none
Wipers
Left Front Window (Up/Down)	red/yel - red/blu		drivers door motor
Right Front Window (Up/Down)	blu/yel - blu/grn		drivers door harness
Left Rear Window (Up/Down)	grn/yel - green	A	drivers door harness
Right Rear Window (Up/Down)	yellow - yel/grn	A	drivers door harness
Trunk/Hatch Pin	green/black	Negative (-)	low in drivers kick
Hood Pin	none
Trunk/Hatch Release Wiring Diagram for [] Trunk/Hatch	none
Factory Alarm (Arm)	none
Factory Alarm (Disarm)	none
Horn	blue/red [1]	Negative (-)	steering column
Brake	green/white	Positive (+)	brake switch
Door Motor (Lock)	none
Door Motor (Unlock)	none
Disarm	none
Disarm No Unlock	none

Additional Info:
[1] High-current ground. Use a relay when interfacing withThis circuit.

ATTENTION: This wiring information is being provided free of charge and on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it by using a digital multimeter. GNU Industries, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. GNU assumes no responsibility resulting from an improper installation, even in reliance upon this information.