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© 2012 by Todd W. White

SM420 Shifter And Backup Switch Installed

Todd W. White

By Todd W. White

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Here's the SM420 Shifter and Backup Switch installed. Clever way for the GM engineers to adapt the old SM420 for the then-new federal regulations that all vehicles had to have backup lights from the factory, starting in 1966.

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© 2012 by Todd W. White

From the album:

New Engine for Mack, Jr.

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