How would i wire my radio in my 1988 isuzu trooper?

Question

I bought the trooper with the factory plug cut out of it and i have another radio but the wires are different colors. If anyone knows what wires go to each other or if anyone has a wiring diagram that would be awesome thanks.

Answer 1

I have found diagrams for my vehicle at installdr.com but they don't have one for every vehicle.  If you are handy with a DMM you could probe the wires and wire it up without a diagram.  It is easy to identify the 12v constant/ACC/ and ground wires in a radio harness with a meter.  When you are trying to find the speaker wires simply connect a 9V battery across the two suspect wires momentarily and if you guessed right then you will hear the speaker make a poping sound.