backup light switch
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Junior User
Joined: Oct 2008
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backup light switch
Ok my truck had a 3 on the tree tranny and the previous owner put a four on the floor with granny gear and i can not find the switch on the tranny or the original plug that plugged into the other tranny. So if any of you guys know any help will be greatly appreciated
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Ok my truck had a 3 on the tree tranny and the previous owner put a four on the floor with granny gear and i can not find the switch on the tranny or the original plug that plugged into the other tranny. So if any of you guys know any help will be greatly appreciated
If the trans is from 1967 and later, it has a backup light switch.
New Process 435: The switch screws into the part of tower the shift lever fits into-drivers side.
Warner T-18: The switch screws into the tower, behind the portion of the tower the shift lever fits into-drivers side rear.
C9TZ15520C .. Backup Light Switch-2 Male Connectors-Use with Warner or New Process 4 Speeds (Motorcraft SW840)
This is just a simple switch, and it's most likely still there, because if it wasn't, gear oil would be spewing from the threaded hole it screws into.
The wire harness that plugs into the backup light switch is part of and feeds off the taillight wiring harness that runs along the left frame rail.
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