Magnum AGS will not start from remote switch.
From other threads; it may be incorrectly wired.
I have received wiring schematics from Thor. I cannot find the controller. Any ideas? - checked all lower outer storage bays, inverter cabinet, and other accessible inner cabinets.
Well I am not familiar with your coach, but while you are waiting for someone who is to respond, the Magnum drawings (per attached link) seem to indicate a 5 amp fuse near the batteries (likely coach/house batteries). I would start looking near the batteries or near the magnum controller unit first.....or trace the wire from the pin shown on the Magnum control unit. I would think if it is an in line fuse it would be close to either end (famous last words).
Glad you found the in line fuse and let others know in case they have a similar issue. Soooooo.......was that your problem? The generator starter solenoid/motor (and hydraulic jack solenoid/motor) in many coaches is typically wired to the coach (house) batteries via a 100 Amp breaker, so Thor probably thought it was a convenient way to grab +12vdc for your controller.