Gen 3 pinouts anymore?

You could look at a AllData. It's a small cost, but you can print wiring diagrams and such there.

I haven't looked for '03/04 pinouts since (as I understand it) they are a bugger to try and swap, but I have a service manual for an '04 Durango. No idea where I got it so I can't point you to a link. I can clip it down to the C1 to C4 pinouts, but I have to email it since I can't attach a pdf here. If you want it, PM your email address and I will send it to you.

The other option is to search for service manuals. You might find what you are looking for in those.