Brake lights come on & off when vehicle is parked.

Asked by Nov 23, 2013 at 06:37 PM about the 2003 Ford F-350 Super Duty Lariat 4WD Extended Cab LB

Question type: Maintenance & Repair

Already checked brake switch, and lights come on & off with brake switch removed.  If it is a relay problem I can't find actual location.

2 Answers

65,935

Your brake light switch completes the circuit to ground and the lights come on. The positive side (+) is always hot on this circuit even with the ignition switch off. You have a bare ground wire touching something metal (unpainted) in the circuit. You'll have to trace the wires to find it. Start at the bulb sockets and work your way forward. HTH. - Jim

1 out of 1 people think this is helpful.
45

SEE questions

Your Answer

Add photo

Related Questions

Search Ford F-350 Super Duty Questions

Ford F-350 Super Duty Experts

#1 Bigbob Reece
Bigbob Reece
Reputation 2,610
#2 tikun
tikun
Reputation 1,340
#3 JoeAndJoe
JoeAndJoe
Reputation 1,140
View All

Related Models For Sale

Used Ford F-250 Super Duty
336 Great Deals out of 46,815 listings starting at $1,895
Used Dodge Ram 3500
87 Great Deals out of 2,160 listings starting at $4,999
Used Ford F-450 Super Duty
33 Great Deals out of 2,609 listings starting at $7,937
Used Ford F-150
2,189 Great Deals out of 206,259 listings starting at $1,499
Used Chevrolet Silverado 2500HD
307 Great Deals out of 27,541 listings starting at $1,250
Used Dodge Ram 2500
154 Great Deals out of 5,232 listings starting at $3,495
Used GMC Sierra 2500HD
114 Great Deals out of 13,950 listings starting at $2,650
Used Chevrolet Silverado 1500
1,682 Great Deals out of 174,591 listings starting at $1,250
Used Chevrolet Silverado 3500
23 Great Deals out of 559 listings starting at $5,800

Used Cars For Sale

2017 Ford F-350 Super Duty For Sale
4 Great Deals out of 14,169 listings starting at $25,659
2016 Ford F-350 Super Duty For Sale
23 Great Deals out of 2,246 listings starting at $28,835
2015 Ford F-350 Super Duty For Sale
41 Great Deals out of 1,504 listings starting at $18,995
2014 Ford F-350 Super Duty For Sale
30 Great Deals out of 705 listings starting at $14,999
2013 Ford F-350 Super Duty For Sale
29 Great Deals out of 570 listings starting at $10,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.