I have a 92 4dr ( I think it is a Tahoe, not sure.) I took out the stock looking delco radio, and there are 3 plugs behind it, they all fit perfectly in the radio. There is no way they will plug into the harness I have. I need some help here! I need to put in my headunit soon!

 

Apparentally this is the *9 or older harness.... Friggin kid who put a system in here before I got it probably had some dumb shop put it in and take it out, thats how this older harness is in my truck... ruined my weekend...