Re: 72 Sierra Grande wiring - still at it
Truck is automatic. I gave the neutral safety switch a careful check. Ignition switch “on” feeds power to the dark green wire for the backups. Ignition switch to “start” feeds power to one of the two purple wires.
I didn’t have time Today to test the HEI except to note that it has several wires attached. I’ll check them all tomorrow.
I did note while in the cab that when a load is put on, say headlights and heater blower, the ammeter does not respond. Not sure if it should or not. I checked the two shunt fuses, they’re fine.
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