Dual headlight issue, cutting out.

[tsm]

I’ve got a 1961 step with a headlight issue. I added dual headlights and it now I’ve had some issues, can you please help me.

I added dual Headlights, now only high beams work, and only momentarily. It seems the headlight controller switch on dash heats up and trips. I can hear it trip, headlights go out and eventually come back on.

Currently low beams don’t work, but have confirmed all lights are working.

I have replaced dash switch and foot switch, with new units. Still having issues. Using original wiring and fuse box.

Is there something obvious I am missing, like a ground? Where are the standard body grounding locations for 1961? Should I rewire the entire thing?

Thank you for your time and help