As far as running a toggle, it won't work. There are a few relays that are powered and then send power in different directions based on request.
As far as the fuse is concerned, on the schematic, it shows a 30-amp fuse. If something larger is being used, replace it with the correct size.
Here is what we need to try. Put the correct fuse in it and see if it fails. If it does, we are going to start at the switches and disconnect them one at a time to see if the fuse still fails.
I attached the wiring schematic below for your reference. If you haven't already, check the relays. Here is a link that explains how it's done:
Let me know what you find.
See pics below. Note: I cut the schematic in half to make them readable for you. I did overlap them so you can follow from one to the next.
Images (Click to enlarge)
Tuesday, April 26th, 2022 AT 8:16 PM