Has to be a short in the wiring or where the wiring is connected.
Driver's side kick panel.
i have a 92 sc400. the cabin fuse box is on the drivers side towards the pedal on the drivers door jam. its small box so look hard.
Drivers side down by the left foot behind the side panel.
This fuse is held in place by a screw and bolt just under the fuse box. front facing you. GL..
I'm not sure on the Gs300 Lexus, but I have a 92 sc400 and there are 2 screws on both sides of the fuse that have to be removed before it can be taken out. Never try to force it, it will break. Hope this helps you
I have a 1992 Lexus SC400. I'm sure you already know where the engine bay fuse box is. (its labled i believe) As for the cabin fuse box, when you open the driver side door, look under the driving wheel near the floor and the door jam. There is the little black cover for the fuse box, all you need to do is squeeze the cover and pull off. Hope this helps.
I would say that it's in the drivers side panel by where your left foot would be but behind the side panel.
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Fuses dont trigger anything they keep a circuit from burning up if shorted out The brake switch attached to the brake pedal does
earth leak or fuse if you are certain the sender switch at top of brake pedal is ok.Put tester on circuit to establish feed or no feed
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