as most of you already know i just got a 74 k5 blazer. It came with a cd player but when i turned it on i heard the radio for a few seconds and then it turned off. when i pulled out the deck i saw that both the switch 12v and constant 12v where hooked up to constant 12v. Will this actually work, or did it fry my cd player when i turned it on? is there a way to check and see if the cd player is actually working? where is the best place to hook up the 12v switch?