Rear Defroster keep cause the breaker to trip. When ever it is on and it below 50 outside it cause the breakr to trip. I know this doing the beginng of summer when was about 65 and run the defroster it would not trip the breaker. But then I was not running front defroster. I didn't think it has any thing do with. I know the breaker because the door looks will not work and that is on the same fuse. When I check the breaker it real hot. I am thinking it is not breaker get old because I dought it would be hot. I know when I was playing with the summer it wasn't get hot. What is up.

You could be having a ground issue. Have you checked and cleaned the grounds and all connectors in the system?

I checked the grounds at the window they are fine. OTher things I did early Is repaired the ground wires running from the driver side controller. The wiring at switch seemed fine. It would helped if had wiring digram of the system. I knew where the other grounds. I also having problems with high beams. IT also had alarms system which relay burned out the brain box is burned out. I have pulled the relay.

if there was a alarm system hooked up...which may have had a remote start....if that is the case then sounds if as the rear defroster might have been wired thought there...that could be causing your problem

Excuse me for being late, but a GROUND cannot cause a fuse to blow or a breaker to trip. You have a short in a POWER wire.

humm I guess this leaves me with one solution to rip into the lower dash and just try to fellow the wiring. The hanes manual for the wiring is usleless. For now I have disable rear defroster with short I really don't want my car to catch on fire. I love to much. When it working all the lines back seem to work. From what I have found the alarm system was seem feeding power off the high beams which explain why they don't work. The alarm did have option for remote start but didn't seem to be hooked up. If any one had some wring diagarms the would help me lot.

my 93 sle did that too. also when it trips, you cant move your seat eather.

My bad on the ground comment... sorry guys

For that short/heating wires.. Look for bad connections, corrosion things like that. pull connectors and look for heat/burnt looking tabs. Once the tabs burn the coating breaks down and causes more resistance.

checked for corrsioin thats good. My seat power is runs thru the door looks fuse

I had the same problem...replace the breaker (not fuse) that is on the same circuit as the defroster.