Low beams headlights not working

Ava wrote:
I am betting the high beam switch is worn or faulty

well its the "low beams" that are out and he says High beams work, low beams do not. switch checks ok

I am betting the high beam switch is worn or faulty

Probably a bad connection. I would unplug and plug in all connectors and see if that helps.

:h

Ford F53 chassis? bad relay!

Mortdd wrote:
What happens when your RV place can't find the issue after hours of looking? High beams work, low beams do not. The high/low beam switch has been checked, the lights have been checked by a direct connect and they work etc.

your at the wrong repair shop. Both low beams out and bulbs are good it should be very easy to trace that out very easy
the first thing once the bulbs or seal beams are confirmed good is check the Fuses!! lots of A motor homes are fused then if there good pull the main switch and check for power in/power out and and so on

What chassis?

Are the lights "fed" through a relay, or does all the current go through the head light switch?