4.3 engine

The light comes on when flipping the switch but the window does not heat up. Not sure where to start looking for the issue. Does this work through a fuse?

also need to get idle speed solenoid, where?

when you push the gas to take off it skips n if you dont let off the gas it will cut off we have had the coil replaced but it did not fix the prob.

i need the easiest way to change the flywheel cause i realy dont want to drop the tranny. thanks.