Ron,
I'm sure you are dead-on correct with your analysis...
I've been trouble shooting a missing IGN signal for the better part of 2 weeks now. It's NOT IGN1, IGN2, up thru about IGN7 or so. Finally, I've traced it to the BBx interface (Body Builder) -no 12 volts to pull in the master ignition relay, needed to power all the rest. No remote mirrors (MRF), no defrost fans, no IRD charging, & and (ha haha) the TV stays on even with the engine running!
That's why I got the mirror remote mixed up with the radio memory. Also, I lost all auxiliary right-hand lighting on my toad, and it isn't the lamp. So I've been tracing left turn & right turn wires, but the cigarette lighters (LTR) are there and working just fine.
Chip, if you burned up lighter wiring, you might pay attention to the amount of load you are pluggung in.
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