Electrical problem w/brake lights
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New User
Joined: May 2007
Posts: 19
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Electrical problem w/brake lights
Every so often the fuse for the brake lights blows. I've stripped the wiring harness from the brake lights to the firewall. Didn't find any bare spots.
While on a trip I used the Emerg. flashers for a few minutes and the fuseuse blew. Can a flasher relay go bad and cause problems?
Not looking forward to tackling the wiring underneath the dash.
While on a trip I used the Emerg. flashers for a few minutes and the fuseuse blew. Can a flasher relay go bad and cause problems?
Not looking forward to tackling the wiring underneath the dash.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Do you have a trailer plug in on the back?
Those are probably where 90% of the brake light problems are located.
Also another place, since the turn, brake and 4 way flashers all use the same filament in the rear lights, brake power goes through the turn signal/4 way flasher switch.
So the next place to look could be in the turn signal switch.
Bad flasher could be possible, but that usually means no flash instead of blown fuses.
Those are probably where 90% of the brake light problems are located.
Also another place, since the turn, brake and 4 way flashers all use the same filament in the rear lights, brake power goes through the turn signal/4 way flasher switch.
So the next place to look could be in the turn signal switch.
Bad flasher could be possible, but that usually means no flash instead of blown fuses.
