Please help
 

i bought a PIONEER AVH-P4100 But need a wiring harness to connecgt both aftermarket radio and stock radio i seen people with their stock radio in the trunk i want to keep all chimes and warnings. I baught this http://www.sonicelectronix.com/item_...-+GM09SRB.html but doesnt seem to work i have an 04 Monte with no casset and no onstar and no bose
im looking for the wiring harness to hook upp both units ur help is much appreciated.

If the product doesnt work on your car, I would assume its either broken or you didnt install it correctly. Contact sonic or the maker of the adapter for help getting it to work. If it still doesnt work, exchange it for a new one or one of a different brand.

OK THANKS IM THINKIN ABOUT TO EXCHANGE IT FOR THIS ONE http://www.sonicelectronix.com/item_...B+-+GM06+.html DO YOU THINK THIS WILL WORK TO PUT STOCK IN TRUNK

Thats the one your going to want, the first one is for if you were running just the aftermarket head unit.

I have the stock radio in the trunk using that same adapter. If you have onstar you'll probably end up losing it, at least that's how it happened to me, until a speaker was added to the original unit. Also, have fun removing the rear seat for the wire installation.