ohead lights no power on neighbors teton

She has purchased new tubes

We have a Teton, I have replaced many of the tubes in the lights. Change them for one to the other see that might help to see if tubes are woking.

BRIDGE WIRE! For troubleshooting. Are all the lights separately connected to negative?

Ok.. the small red buttons (lol... we old)
are the bank of 12vdc breakers. I pulled the panel and used DVM. they all seem to be good and
Are passing the voltage through the breakers.

So, then i go into the bathroom where there are 2 of
these 12v light fixtures, both controlled by the same wall switch. One comes on, the other doesnt.

Pull both fixtures............
One has 12v present..... the other one has nothing.
Both wired together i think....

My head exploded.

Did you push any of them?

Red Buttons: Marginal comic...

You are putting forth the picture that the Teton's electrical panels have no labeling of circuits.

The red buttons could be resettable breakers. Or resettable fuses. The lights are 12 volts so should have fuses in the power line. Are other 12 volt things working? water pump heater etc. If not is the battery charged? Is the salesman switch turn on.