Voila! I checked the OD switch wire at he base of the stick and found the problem. After splicing in three new wires which were obviously bad, I assumed the OD harness was okay because it looked good on the exterior. Lo and behold, when I tested the OD and it worked, I then moved the wire harness a ...

Thank you. I will check all.

Is the low/high beam switch on the column working properly?

The overdrive works intermittently when the OD button is pushed. When it works, the green OD light comes on, and the overdrive engages. It also deselects fine. OD does not work each time OD button is pressed. OD switch and relay changed out. Wiring repaired where insulation deteriorated. Wiring look...