Alternator wiring

You might check this thread:

http://www.forabodiesonly.com/mopar/showthread.php?t=170781

I used a used relay center out of a Voyager for the relays to run ignition, fuel pump, headlights, and charging system. Somebody else posted a commercial product, does the same thing. The box I used is very easy to re-wire and reconfigure the relays and fuses for what you want I mounted it on the left fender apron forward of the washer tank.

But your regulator is just fine, your clip lead test proved THAT. All you need to do now, as said above, is "find the drop" in the hot side harness. VERY common problem.