Why does main fuse under seat blow when motor gets hot?

There is an electric motor that controls the blend door. You probably have an issue at the blend door. Either the motor is bad, or the actuator isn't connected. The actuator arms are know to crack and allow the motor to move without moving the actuator.

Obtain a factory wiring diagram, then determine which wires are connected to the fuse that blows, then trace down the wires for the shorted one

hi there it sounds like it could be you regulator that is overcharching and blowing the fuse because of the heat in it have a feel of it when it is running and see how hot it gets . hope this helps

Sounds like a short in the wiring. Start tracing the wire back. You will probably find it under the carpet on the Left side, near the door. Good luck.

under your seat there is a bunch of wires 3 of the yellow i think wires goes to a pigtail thats the wiring harness for your stator and rectifier i had 03 1100 spirit shadow and 1 day i was riding and it jus quit on me i finally got it home broke it down n noticed the fuse kept popping every time i changed it then i found the melted pigtail looking for a short so i cut pigtail out straight wired each wire an never had a problem since.

IF it is blowing when you adjust seat then a wire is shorting in the seat harness

I'm a Honda guy but try looking around under the seat or under the side panels for a main fuse. If the main fuse is fried (usually around a 30 amp fuse) nothing will happen with the bike unless the fuse is replaced.

Either Your fan switch is burned out or you blower motor is no good, your blower motor is on the passenger side under the dash. Before you replace any parts you need to check your fuses and relays under your hood and in the car. Usually if your fan switch goes bad you will still get some air blowing thru the vents, so my guess would be blower motor, If its not a blown fuse or relay.

Sounds like a power wire short.

If you have a short in the power wire to the seats, it will cause the fuse to get hot...and blow.

Look under the seat(s) to see if any wires got run over by the seat tracks.

A good way to troubleshoot the problem is to disconnect both seats from thier factory anthenol connector, and put fuse in. Plug in each seat. When the fuse blows, you will know which seat is the 'culprit'/Short (power wire going directly to ground)

Inspect problem seat's wiring, check for shorts.