Thanks, I'll have a go at disconnecting the ground.

I took the car down to a mate of mine who owns a local car assessory shop (autobarn), he took the resistor out of the car and tested it with a voltmeter and stuff. He took it apart and found a semi conductor under the main circuit board, and believed that to be the problem, but it is all black and has no markings on it, otherwise it could be possible to replace that only.

Also, we found that (probably normal) when the casing of the resistor touched part of the car it adjusted the fan speed.

Having a look at the resistor my part number does not match up to your number. I have a japanese 1997 model with climate control, I dont know if that has anything to do with the different part numbers.

On the front at the top of the part I have the numbers 76041 and at the bottom I have 582670-2700.