plaaya69 said:Check the circuit breaker. I had the same problem on my supra and it drove me nuts. I checked my fuses, took the rear panel off inside of the trunk and looked at the defroster amplifier and all of the wiring, until I found out that it was the circuit breaker but about the fuses check the 7.5a gauge fuse. Hope this helps.
isnms said:http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?Section=Main&Page=016
30A Defog CB
Also check - 15A Tail and 7.5A Gauge
It should not be hard to pull out the 30A circuit breaker. Also you should try the defogger relay and see if it works or not(the relay is right below the circuit breaker) and if the relay is good, fuses are good, defogger switch is good, circuit breaker is good then you should try and look at the defogger amplifier and the wiring on the window in the rear of the Supra. Maybe your defogger amplifier is bad but usually these do not go bad.huntin5L said:Well i tried popping a paper clip in the whole, i didn't hear a pop at all, i was pushing damn hard too. I tested the lines with a voltmeter and i didn't get any readings at all, 0 volts. I tried pulling out the 30amp cb fuse, but I couldn't get it out. Should it be that tought to get out?