how many wiring harnesses are there in my truck? (89 dak) 1 is all i can see and it only contains the speaker wires. I'm having problems connecting my cd deck and can't seem to figure out why. Having another harness would sure clear things up.

 

There should be two 7-pin connectors for the radio, a black and a gray connector.

 

did it have a radio in it before?? if so like dodgerule said there should be to connectors grey and black...if not someone might of cut them...also stick your hand back there and see if they didn't get pushed back and fell under neath the dash..you could lay on your head and look under to i think...