Backup Lights on a 1968
Short answer: The backup-lamp switch on a manual-transmission 1968 is adjusted per the 1968 Pontiac Service Manual (pg 12-22). (Automatics use the neutralizer-switch adjustment instead.)
Manual, column shift:
- Insert a 0.090″ gauge pin through the hole in the switch body and into the hole in the drive tang.
- Set the gearshift lever in reverse.
- Insert the switch drive tang into the shifter-tube slot with the tang touching the right-hand edge of the slot, and assemble the switch.
- Remove the gauge pin.
Manual, floor shift:
- Place the lever in reverse.
- Position the switch so the plunger is fully depressed against the lever.
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Content last modified: June 13, 2026 at 10:06 am
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