alright guys i need some help installing a cd deck...everytime i try to hook one up the deck doesnt turn on....all the wiring is right but im not sure what happen....i had a working deck in my car before but then i was fixing my speakers and the deck just died and wouldnt turn back on anymore....i got a new deck and plugged it in and it turned on for like 10 mins then no power....checked fuses on both decks doesnt look blown...checked car fuses they look fine...when i installed the speakers i wasnt sure which wire was positive and which color was negative...do u think this could of caused the cd decks to break? the 2 decks i had in my car worked fine before with same wiring to the speaker...can u guys give me any tips on how ot fix this problem? thx..