1968 DART REVERSE LIGHT SWITCH CONNECTOR LOCATION

Hi,Can someone tell me where the reverse light switch connector plugs in at? I was trying to figure out why my backup lights wouldn't work and found this plug just hanging down under the dash by the column. Jumpered it with a paperclip and the reverse lights came on. Not sure why it was disconnected but I'd like to plug it in and see if the switch works. Anyone here know where it goes and can post a photo?
1968 Dart with auto trans and colum shift.

20240321_120333.jpg