I am getting ready to install an aftermarket double din radio in my 2003 2500 and I have read that I can still use the amp and just wire it up as normal but I will need to make sure I connect the power from the infinity amp to the remote wire coming from the radio. My question is, what color is the amp turn on wire/power wire coming from the amp?

Thanks in advance!

 

If you havent finished this yet, go to Crutchfield.com.... enter your vehicle info... and search for wiring harness. Should be plug n play from them. On my '08 though, it said I would lose fader control with amp, but I got around that issue

 

I second David's advice. Crutchfield has good wiring information for your vehicle.

Another alternative is to look at these links. You must use internet explorer for these to work.

These are for a 2004 quad cab 4x4 2500. It's the best that they maintain but should be similair to your 2003 2500.

http://www.rambodybuilder.com/2004/d...47/8W-47-1.pdf This is the main page for your audio system as a whole.
http://www.rambodybuilder.com/2004/d...47/8W-47-4.pdf This is the page specific to your amplifier.
http://www.rambodybuilder.com/2004/d...47/8W-47-5.pdf This is a continuation of that page.

I hope these can help. This is the best that I can do.