<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Hummer4Life:
Okay, I'll stop beating this topic dead shortly. TorontoJeff is on to something. I stopped at my local stereo installer's shop and picked up an adapter that connects between the existing "small" port on the back of the factory radio, and the original harness from the vehicle. Once I try it out, I'll let everyone know what it is, if it in fact works.
My BIG question is, for those of you who have already toyed around with the main connector harness that contains the power line, which wire is the power line most importantly, and which is the ground (I assume the black)? These are the only two direct wiring needs of the adapter, outside of wiring already built into the connector harness. Or should I simply tap into one of my two existing 12 volt power source adapators/plugs that we have? </div></BLOCKQUOTE>
You should check out crisco site he has step by step instructions when replacing factory radio.
http://www.rausite.com/hummerh3.htm