No wiring diagram

[Waterloo]

Sounds like you may be overloading the circuit... On my Petes, the chicken lights were all on their own separate circuits and switched at the dash. I had four or five different switches in the dash, all dedicated to certain banks of lights. This was before the low power consumption LED lights, you could watch the volt meter drop when you turned them all on at once.

I would wire up the skirt lights to their own circuit/power supply and add a switch. Just off the top of my head having dealt with these things in the past. No desire to have them anymore, too many issues, like you are experiencing.