Blowing brake fuse as soon as it touches, the only thing that stops it blowing is pulling a plug from the bcm, not sure if im just pulling power to the bcm or whether theres a bcm fault???

SOURCE: Brake lights/ Turning signals not working on a 2004 cavalier

change brake light switch . check brake switch wiring . for shorting then check tail light bulbs sockets. if you cant find it. you probably going have to buy a short finder.

SOURCE: 2004 Landrover Freelander stop/reverse light fuse keeps blowing

I had a persistent problem of hill light warning and TCS warning lights coming on for no apparent reason. There is a wire connection between the stop light switch and the control unit to let the system know when brakes are being applied. Changing the stop light switch cured it. The replaced switch was certainly sticking and the new one was of a different design. Replaced it myself as switch comes with a wiring loom. Need to get on your back under the steering wheel! Not very expensive. My car 2001 TD4

Les

SOURCE: taillights and license plate lights not working

there is a short somewhere.put a test light in place of the fuse.
the light will glow bright.when the short is removed,the light will go dim

SOURCE: 1996 ford explorer windows, locks and seat fuse keeps blowing

Disconnect as many of the door switch wiring plugs, and wiring plugs for the seats that you can. Then, drop in a fuse. If it blows, you probably have a wiring issue, not a switch issue. If it doesn't blow immediately, reconnect the doors, and seats one at a time till the fuse does blow. Once it does, you've isolated your problem to a smaller area, and can replace / rewire that component.

If you've disconnected everything, and the fuse still blows, you probably have a wiring issue that will need to be traced. You will need a multimeter that can read ohms. You'll need to isolate different parts of the circuit (probably by unplugging and or cutting a wire in that circuit unfortunately) then use the multimeter to test the ohms from that part of the circuit to NON voltage side of the fuse holder. (If you try to test ohms on a hot circuit you will likely fry your multimeter!). If the meter reads low ohms, there is your short. High ohms (infinity) means there is no circuit, and there is no short. When you hit on something of low ohms, you've isolated the problem to a smaller area, and can keep tracing that wiring back to the fuse box to find your short.

Good Luck.

SOURCE: I have a ford f150

I had the very same condition . I removed the DO1 diode and the FO3 5 amp fuse that are next to the R202 relay and that did the trick.