I just bought a 90 civic hb, it came with no radio at all, I was wondering if someone can lead me on where to start on how to install an aftermarket radio unit? the person gave me some extra speakers also but i tried to put them in but one of the connectors were too small for the speakers? I''m assuming its because the cars really old? Thanks ahead of time

 

You mean the connectors @ the speakers? Be better off just running some quality speaker wire and solder the connections instead. OEM connectors = resistance = junk I.M.O.

 

 

Here are all the wires and what they are enjoy

1988-91 Honda Civic Stereo Wiring

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