I’ll try to look at a schematic tomorrow unless you already have one. Usually you can figure it out with a schematic if you know how to use an ohm meter and trace the wires back. Also you have to be able to know how the switch is working.

It would have been nice if the tech that took the proper switch out would have marked on the chasis what wires goes where.

It would be nice to have a variac for this job.

Talk soon,
Gary

Really appreciated your site and videos. I’ve recently purchased a Fender Ultimate Chorus amp. You probably know they are tubeless. So anyway, it has the wrong on/off switch in it. What is in there is a switch with three mail connectors. (The original, which I now have, is a DPST rocker switch with four male connectors)

I have no idea where the wiring should go now, and Fender does not give wiring instruction on their website. Was wondering you could help me?

Thanks,

Alan