My 98 B2500 blew the brake light fuse . I replaced the fuse and as soon as I hit the pedal the fuse blows. Is there a way of testing the brake switch and are they known to go bad? I'm puzzled by the green wire going directly to ground. I have it unhooked from the switch and unhooked from the connector underneath between the cab and the box. If the green wire is grounded in the harness, I might be better off splicing a single wire in , Any help appreciated.

 

I'm not clear on the fuse blowing sequence. Did you have the fuse blow before you messed with the wiring, or are you trying to wire something into the brake light wiring harness????

 

The fuse blew before I checked into it.

 

OK, check both rear brake lamps, if a filiment blows, it can cause a fuse to blow.

Does the fuse blow if you remove both rear brake lamps & step on the brake pedal????, If so, it would indicate a wiring problem between the rear brake lamp sockets & the fuse panel.

Did this problem happen suddenly after some event????

 

Yeah, Nice call Pawpaw. The filament blew and shorted it out. Many thanks, you saved me alot of headaches.

 

OK, good find fix & feedback & to hear your on the road again.