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Should be on the shifter base, together with the neutral start switch. If you have the horseshoe shifter, it's easy to find it by removing the top cover.
 

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Olle,

Is the neutral START switch the same as the neutral SAFETY switch? The switch I am referring to is the one associated with the clutch pedal (not the shifter), which requires you to have the clutch depressed in order to start the car. I would assume the back up lite switch would be located so that when you selected reverse with the shifter, either the shifter or the linkage for reverse would actuate the back up lites.

Sam
 

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Sorry, didn't notice that you have a 4-speed, thought it was an automatic. But yes, the neutral start switch for an automatic transmission serves the same purpose as the safety switch on the clutch on a 4-speed - it prevents you from running the starter when the transmission is in gear. Don't know where the backup light switch would be located, but the only place it could possibly be would be somewhere on or around the linkage.
 

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68 was the last year for the trans mounted backup light switch. On 69’s it’s on the steering column, top just inside the firewall. It is actuated by the reverse back link. Linkage attached to the trans reverse lever and a lever on the steering column. When setup factory correct the trans must be in reverse to allow removal of the ignition key leaving the steering wheel locked and the trans locked in reverse.
 

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The backup light switch is located at the base of the steering column(at your feet).This is a totally different switch from the automatic one.
How it works is there is a rod attached to the reverse lever which moves a series of rods that go up to the steering column. This then rotates the column accordingly to actuate the switch. This also is the same linkage which locks the column and tranny whene the key is removed,meaning to remove the key the tranny must be in reverse.
Hope this helps
John
 
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