Hello... Tried to get the back up lamps to work on the '66 today. No luck. I do have continuity to ground on the outer socket. I do not have power to the center pin when the key is on and the shifter is in reverse. Thanks to the FSM, I discovered that earlier Mopars don't use a 3 pin neutral switch on the transmission, but that the backup lamp switch is on the shifter mount. Do these switches go bad? Is there a fuse I should check? Or a bulkhead connector? As always, any help would be appreciated. I have learned a ton of things in the last few weeks!