Mack F-700
Active Member
Any suggestions on why brake lights don’t work? It’s a new switch (74 Dart)
BRAKE LIGHTS
- Thread starter Mack F-700
- Start date
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Blown fuse, bad wiring, switch out of adjustment, on and on and on...
72Duster440
Well-Known Member
power at the switch? power at the bulb? ground at the bulb? bulb blown? could be anything
67Dart273
Well-Known Member
"Follow the path". Power from the fuse panel the switch should have power all the time. White wire is output is live with pedal depressed, that goes up to the column turn signal switch connector and into the turn signal switch. The switch routes power to both lamps with switch centered, and to the "not flashing" lamp in a turn.
Do the two signals work, left and right? have you checked for power out of the switch?
Check the brake wire right at the column switch connector ON BOTH SIDES of the connector
Wiggle the hazard switch, turn it on/ off a couple of times and wiggle again. That is a known failure
Do the two signals work, left and right? have you checked for power out of the switch?
Check the brake wire right at the column switch connector ON BOTH SIDES of the connector
Wiggle the hazard switch, turn it on/ off a couple of times and wiggle again. That is a known failure
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Demonic
Well-Known Member
Take your meter or test light and see if there's power at the switch.
Mack F-700
Active Member
Mack F-700
Active Member
I have turn signals. I didn’t think to try 4 ways till now, and they don’t work either.
67Dart273
Well-Known Member
In that case the problem may be in the rear harness/ lights themselves
I would start with the lamps, are the bulbs actually good, are they the correct numbers, and are the sockets grounded. Other troubles include pinched harness under the rear seat, bad connections at the kick panel harness connector. You can also check the outputs from the turn signal switch going out to the rear
I would start with the lamps, are the bulbs actually good, are they the correct numbers, and are the sockets grounded. Other troubles include pinched harness under the rear seat, bad connections at the kick panel harness connector. You can also check the outputs from the turn signal switch going out to the rear
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