I have done a search but not completely sure on one thing. My C5 is a 99 and has a completely stock Bose system. I have an Alpine 9883 but no wiring harness and I know I will need an adapter to hook the headunit up so I can still use the internal amp. Will this piece from peripheral be all that I need http://peripheralelectronics.com/#3 or should I get this one from crutchfield http://www.crutchfield.com/S-qNUDycU...C4GM02&tp=3486 ? Thanks

 

the crutchfield adapter is deff wrong and the other one wont link

the best/easiest/most user friendly is soundgate gmcrv2