Yeah so Im pretty much dis-assembling the whole car and running new speaker wire directly from the HU to the speakers. Im gonna leave the power sources and grounds (red, yellow, orange, and black) connected the harness so pretty much just the speakers will bypass the harness. I really wish I didn't have to do this but Pontiac decided to make this car a pain in the butt to upgrade (HU wise).

your better off. if you havent run door speakers before it works better if you can have a fish tape on hand. sometimes you can get it with some heavier wire but its not as handy

Now another problem. I was still using the harness to power the system and ground it and wired the front speakers directly from the HU. Now the HU wont even turn on so my father wants to scrap the harness entirely and run from the fuse box. I looked up which fuse would the radio go to and it said 21 was Audio. Is that the radio? Please help im on my last nerve with this thing.

the fuse location should be the owners manual, it sounds like you either blew that or did you use the fuse that comes with the hu and wire it to the adapter? that may be blown, should be something simple if it worked before.

No it wasn't the fuse. Got it hooked up correctly and it finally works! Now can someone point me in the direction of a good mount for the HU that fits. I bought one and I need to file/sand it down and cut pieces of it because it hardly fit.

Hello, I know im a bit late in this thread, but, im running subs and im using an rca converter (which was pre-used) and I conneced them straight from the 6x9 wires, for some reason or the next it shorted my last woofer amp and its causing the one I installed today to shut off! Is it because im tapping the wires from stock amp to the speakers directly and should I tap into the wires from the head unit to the stock amp?? thanks ahead!!!

You tapped into the correct wires. Your "RCA Converter" should not cause the amp to short out. It is more likely you don't have the amp itself tuned or wired properly.

Thanks for the reply, so do you think its cause my rca could have a short or because I hooked up a capacitor? When I turn up the level on the slowly the protect light would begin to flash.

I doubt a short in the RCA'* could cause that. I'm thinking you have too low of an ohm for your amp/sub, or perhaps a short in the speaker wiring going to the sub.

Have you put your sub on an ohm meter to see what you are running it at the way it is wired?

Okay, I'm all set with the subs, now I would like to remove my stock 6x9'* and put in aftermarkets but I would like to tap into my mid range rear door speakers, can anyone help me with the color diagram for the rear door speakers from the amp of the 2005 Bonneville GXP monsoon system???? THanks for all the help so far fella'*!!!