Petey, I stuck my head under the dash and everything looks clean and dry around the wiring and headlight switch.

That high/low beam switch looks good but the terminals are riveted on and swivel a bit, (seem a little loose). I don't see a direct relation but might follow up on that one anyway.

I think I may have caused the "Mega Ohm" readings accidently through poor practices. I've since discovered infinite resistance on both brake light switches if I keep my fat fingers off them while using the meter. I might have been pinching the poles between the probe and my finger last time.

At this point I've disconnected and reconnected things enough times that the problem is not present. I am suspicious of an extension wire that I had made from the OEM harness to reach the brake switch and I'm going to replace it today. Tomorrow is cruise night so I'll see if anything arises after I get back.

Thanks for all the input,

 

LOL! Been making a living with my meter for over 40 years, and still catch myself doing that occasionally.