Neutral Safety Switch 904 reverse lights not working.

Hi Guys,

Ok I am stuck, my back up lights (reverse) don't work, I know the 2 outside pins are suppose to short together when in reverse to turn the lights on, with the car in reverse the switch does not close (I have been under there with my meter) So the trans is an early 1970s non lock up. It has been rebuilt and the NSS was replace with new.

The car cranks over in Neutral and Park and in any other gear will not crank.

Now there is something odd going on the 3 pins on the old switch are...

Neutral Safety Switch 904 reverse lights not working.
Author: Bruceynz