tought this could be helpfull
got it form
www.the12volt.com
1988-91 Honda Civic Security Information
Constant 12V+ White Ignition Switch Harness
Starter Black/White Ignition Switch Harness
Ignition Black/Yellow Ignition Switch Harness
Accessory Blue/White Ignition Switch Harness
Tach Blue Distributor
Brake Switch Green/White Brake Switch
Trunk Pin Green/Black (-) Harness from Dash INDICATOR
Parking Lights Red/Black Fuse Panel
Head Lamp Red/Blue Fuse Panel
Hood Pin n/a
Factory Disarm n/a
Door Trigger Green/Red (-) Driver's Kick
Door Lock Green/White (-) In Driver's Door at Door Lock Module
Door Unlock Green/Red (-)
Horn Wire Blue/Red (-) Steering Column, use Relay
1988-91 Honda Civic Cruise Information
Constant 12V+ White Ignition Switch Harness or Use Hot Side of Brake
Switched 12V+ Black/Yellow Ignition Switch Harness
Ground Use Chassis Near Cruise Control Module
Hot Side of Brake n/a Brake Switch
Cold Side of Brake Green/White Brake Switch
Tach Blue Distributor
VSS Lead Yellow/Red Driver's Side Dash at Firewall,13 Pin Connector
Pulses Per Mile 4000 PPM
Notes: Vehicles with Manual Transmission require Clutch Switch. Some vehicles may require a speed signal generator and/or other parts/adapters not listed above. Rostra® Cruise module switch settings may differ if you use a speed signal generator or magnets and a pick up coil.
1988-91 Honda Civic Stereo Information
Constant 12V+ Blue/White
Switched 12V+ Yellow/Red
Ground Black
Illumination Red/Black
Dimmer n/a
Antenna Driver's Pillar
Front Speakers 6 1/2" Doors
Left Front (+) Blue/Green
Left Front (-) Gray/Black
Right Front (+) Red/Green
Right Front (-) Brown/Black
Rear Speakers 6 1/2" Rear Deck
Left Rear (+) Blue/Yellow
Left Rear (-) Gray/White
Right Rear (+) Red/Yellow
Right Rear (-) Brown/White