I don't know if any one can help me, but I have a quick question. I am looking to hook up an amp (to run a sub) to the stock radio assembly in my '99 Chevy Silverado. I'm not sure if the heavier gauge wire would fit, if there is a place to plug directly in, or if there is something else I could use. Also, some kind of diagnostics might be helpful. Kinda a random question, but anything will be helpful... I want to try and avoid paying $60+ to have someone else install it. Thanks.