Battery voltage for the gauge goes to the seat belt warning and door ajar warning lights. If those work your + voltage is getting into the binnacle....
I've not taken a harness apart but would guess the 12 volt power going to the blower breaker is a direct wire to the feed through bolt at the rear of...
Agreed. You just have to remember that dwell times the negative pulse so if your scope reads duty cycle it uses the positive pulse for the resulting...