to make your life easier in the future, go to a junkyard and pick up a stock harness to put back into your car. if you ever decide to change decks or take out the one you're installing, you will be happy you spent the time now.
if you're set on just using what's there, here's what you're looking at for color charts and such.
If you want to use a newer style harness (like I'm doing so I can use the cd player I grabbed outta my 97 GTP)
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1987 Trans Am, work in progress
2008 Pontiac G8
Retired: 1984 Camaro "ZF" 2.8L, 1989 Camaro RS
Customer Service Manager,
1A Auto Parts 
