2003 grand prix gt

Needing some help, so here's the deal. Tommorow I have an install to do for one of my buddies. Its a 2003 Grand Prix GT. I looked Didn't seem to see any factory amp. Still stock head unit. But it does have a factory alarm. On the 12 volt you have 2002 and 2004 gt but no 2003 grand prix's. I need to know the colors for the stereo. If anyone can get these posted ASAP it would be muchly appreciated.

Look at the 02 and 04, if they are the same, then the 03 will be the same.  If not use both as a crib.

Is there any need to bypass the radio security? will it cause any problems?

yungen2003 wrote: Is there any need to bypass the radio security? will it cause any problems?

You wont need to "bypass" anything to install the new radio(as far as the radio security)...Radio Security usually means that when you plug the factory radio back in...You need to enter a code using the buttons on the factory radio to unlock/be able to use factory radio...Why do you need the factory wire colors...? Are you going to use a wiring harness for the install...? What im getting at...is i hope there will be no cutting of any wires in the car...?...right...!?Here are the wiring harness options from Metra...

Search Results Click part for more detailed product information.
	Metra Electronics Corp. 70-1858 General Motors 1988-Up - Into Car 21-pin More Details
	Metra Electronics Corp. 70-2054 Factory amplifier bypass harness More Details
	Metra Electronics Corp. GMOS-11 Onstar interface with or without factory amplifiers. More Details

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