I understand this topic has been done to death, so I begrudgingly ask about the 3 speed overdrive setup. I would like to have the governor in use but not the kickdown switch. Could I use a toggle switch to turn it off and on and the cable to lock the overdrive in or out? I have a relay in the fuse box I'm installing and wondering if i can run it through that instead of separate one. I'm ordering my harness from Jim Carter, they say wiring instructions are included, but I'm trying to plan ahead.