95 CH613 e7-350 V-MAC I'm looking for a relay panel layout for this truck. There wasn't one behind the "glove box door" covering the panel. Local Mack dealer doesn't have one. Turn the truck off and kill the lights, and the truck lights go out, but the trailer lights stay on. Happens with more than one trailer, and said trailers only exhibit this behavior with that one truck. Unplug the pigtail and lights go out. Plug the pigtail back in, lights stay off until you turn the switch back on. Tried a different pigtail, same issue. Unplugged the light switch, trailer lights still on. Finally started pulling relays. Found one that made the lights go out when it was pulled. Tried a different relay, and lights stayed on until the relay was taken out. So...I'm trying to find out what that relay does. Lights work fine with the relay out, but I'm afraid it might control something else important. Knowing what all is on that circuit might give me a clue where to look for the ultimate gremlin. Any help would be greatly appreciated. Mike
