I have a '91 f150 with tha 300 with a 5spd tranny. Yesterday I noticed a connector hanging down.When I got underneath the truck it went to a red connector on the driverside of the rear of the transmission.The truck didnt seem to run any diffrent with it unplugged or plugged. Anyone know what this mihgt be? It is at the top rear of the driverside of the tranny.

 

Welcome to the site!

Perhaps the switch for the back-up / reverse lights?

 

Thanks,that is what it was.