Your reply got me thinking 07EXPYEL. I got out the voltmeter to see if the pins in the fuse and relay sockets had any voltage on them. What I found was that all the relay pins were dead, but there is 12v on one of the fuse #13 pins. So I plugged in a fuse and found that 12v was now on one of the relay pins. I'd guess that's the 12v battery supply to the input side of the relay. Then I turned on the engine and found 12v was now on another of the relay pins, very likely one of the relay coil connections. I also found the relay coil ground connection. So now the question remains, is there a wire connection to the relay output pin, running somewhere, for a battery charge connection pigtail? If so, where the heck does that wire go? It doesn't go to the hitch area as far as I can see, so where else?? Thanks!