Okie, I've had another look, dunno which vehicle I was looking at with a loom on both sides, but this one only has the loom on the drivers side and it's only a 6 wire loom to the rear of the vehicle (brake, tail, blinkers, reverse and earth). There is no provision for a tow-bar connection with 7 wires. I guess I am back to running a separate feed back to the fuse panel or battery ... Unless of course someone has info on hooking into the cabin interior light or some other "unused" feed closer to the rear of the vehicle? Like maybe the unused central locking cables? Aahhh, what about using the rear window demister? That'd be no hassle to hook over to the tub. After 30 something years of driving (stopping every 2 hours of course
) I've never used that rear window demister. I think this'll be my solution, unless someone has a better idea before I actually start the job in the next day or two.