They actually managed to make it work with the bose speakers but i did disconnect my stock 12 and put in two JL 10s i had around the house. it sounds perfect but now the deck not the brain, keeps overheating and turning off. Panasonic is calling it defective and i am getting a new one on Thursday, hopefully the problems will be over after this or else i guess i am going to small claims court. there was no adapter for my sts deck, they made a dummy plate and hid the original deck in my center counsel (council?). as far as the deville goes, make sure the place you go to has worked with bose and more imporantly caddies. trust me after my hastle, it would have been worth paying more for installation done right. everytime i have something done for my car, the place complains. i got the clifford matrix automatic startup alarm with the lcd screen put in and it took them 3 days to figure out all the wiring and make it work right. these cars are no joke i guess. before you play with the deville, i suggest you find someone who has had similar work done to it or go to cardomain.com and ask somebody with one how it was done. anyway, when it is working i love having the screen w/ the bose speakers but if this doesn't work on thursday i know this is going to be a bit&$ to get them to reinstall my stock system. and get my money back.