71TR6
Jedi Hopeful
Offline
Hello All- I’m wiring up a TR4 overdrive unit that I installed into my TR3A and notice there are three switches on the top of the case. I think I’ve correctly wired up the lockout switches (confirm, please?) but I have no idea what the third switch is for. Does anyone have any idea what this does? Secondly, where should the OD harness ground ring attach?