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02-28-2021, 12:45 AM
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Who Changed This?
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,164
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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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