Thanks Jim for the link. Unfortunately it only shows a pictorial image of the manual switch and what I need is the wiring for the auto trans as they are different.  What I probably need is the schematic diagram to tell me where to pick up the power when it is shifted into reverse.

Hi Ian,
Here is a wiring diagram for the Back UP lights.
Hopefully this will get you started.
It is a big .jpg as I scanned it at 300 dpi to see the details so I added it as an attachment instead of an image.
I'm glad you had a good trip.


Jim
Norfolk, VA

"MABLE"
1956 Thunderbird Green / Brown Interior (ZE-XG)

"MEAN GREEN"
1956 Mainline (FG-BE)

I want to connect backup lights to my Tbird and the Thunderbird parts suppliers indicate the that they are wired to the FM transmission neutral safety switch. I tested the two terminals for power with the car in reverse and the ignition on but got nothing. I don't have a schematic diagram of the wiring only the 1957 Ford workshop manual and I can't find it in there. I was wondering if anyone could point me in the right direction.