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Discussion Starter #1
brake lights come on, the turn signals work, so do hazards. but when the headlamps are on, the lights, running lights whatever dont come one at night. only when i used the brakes.

i am not sure why.
i checked the bulbs, changed em out, looked at fuses, nothing wrong, so loose wires.

maybe the switch, bu which switch?
 

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Merlon said:
brake lights come on, the turn signals work, so do hazards. but when the headlamps are on, the lights, running lights whatever dont come one at night. only when i used the brakes.

i am not sure why.
i checked the bulbs, changed em out, looked at fuses, nothing wrong, so loose wires.

maybe the switch, bu which switch?
Check your ground wires
 

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Discussion Starter #4
theres like three different grounds in there

but they were good, turned out the tag lights were burned out, and the led apc light i had in there before burned my rr/pk lps 10a fuse

freaking apc, i used nightshades so i needed brighter bulbs, they only got me ticketed twice.

once for not visable, and once for no running lights
 

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i had a 90 tbird and the dimmer switch was weird> turn it to dim and it dimmed the outside back running lights turn it to bright it lit the lights in the back to bright > i found out after being stopped by the police going to work...i would test that to see if it helps not sure why it was wired that way?????
 

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C F I FLY said:
i had a 90 tbird and the dimmer switch was weird> turn it to dim and it dimmed the outside back running lights turn it to bright it lit the lights in the back to bright > i found out after being stopped by the police going to work...i would test that to see if it helps not sure why it was wired that way?????
i knew a guy that had a 89ish f150 that did that turns out he wiered hid cd player wrong that will learn him for not buying the wire harness:cool:
 

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Dim Bulb
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C F I FLY said:
i had a 90 tbird and the dimmer switch was weird> turn it to dim and it dimmed the outside back running lights turn it to bright it lit the lights in the back to bright > i found out after being stopped by the police going to work...i would test that to see if it helps not sure why it was wired that way?????
Sounds like somebody did a hack job on some custom wiring, a plug/wire was shorting out, etc
 

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High-Mileage 4.6L Thrasher
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Falcon5783 said:
Sounds like somebody did a hack job on some custom wiring, a plug/wire was shorting out, etc
A bad multifunction switch can do the same thing.
JL
 
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