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Eureka!! Apparently the problem was in the foot dimmer switch. After taking it out and checking for ground, we cleaned the attachment area in the cab and undercarriage, removed wiring and cleaned, replaced everything, reattached....low and behold 24v at the headlight buckets. Such an easy...

Sorry not dimmer. 3 lever switch is what I meant to say.

Have not tested that. If nothing is coming out from the headlights, does that mean that it needs a new dimmer?

No, only one bulb worked. But we were not getting anything at the connectors. We ordered some new bulbs, but we are stumped on the wiring to the headlights.

Yes, they do. When we tested the headlight connections, we went through low and high beams and nothing. We tested the ground on both headlights and grounds are fine. We were wondering if we should take apart the dimmer switch just incase it had corrosion but we decided not to because that's a...

Yes, we only moved the switch up. The parking lights work as well.

We have got good grounds to the headlights all the wiring looks intact but no positive voltage. All other lights work except for panel illumination.

That was very informative. I plan on back tracking the wires tomorrow, I will let you know what I find. Thank you so much for the help.

Thank you for the information

The head lights on my m35a2 have not been working. Usually its the other way around with the head lights working but the signals arent working. Does anyone know if this is a wiring issue or just bad headlights. Thanks!