Re: Backup Switch Question
I can't tell where it is, exactly, on the transmission, from the pictures. If it isn't actually the back-up light switch, it's probably the switch for the Transmission Controlled Spark system. It would have been situated so that it completed a circuit that energized a solenoid and allowed vacuum advance to the distributor.
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~Steven
'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper
Simi Valley, CA
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