I think the switch was only offered in 1967. I've seen one on eBay, and you might watch there for one. I've been told they are not real robust.
I bought an alarm type magnetic reed switch thinking I'd use that to operate the backup lights on my '55.
I see the switch mounted on a short piece of plastic pipe dropped over the top of the transmission. Then the magnet somehow attached to the shifter itself. I've only gone so far as to experiment with how close the pieces need to be to close the switch, and how far apart before it opens again.
I'm assuming I'll use a relay to actually operate the lights.
Meanwhile I'm using a dash mounted switch that has a light in it. The light is supposed to remind me if I've left them on...
If you poke around on my web site you'll find some pictures on putting the backup lights in. When I sort out the switch I'll have some pictures and description of that too.
