Hey all, I'm using 1157 LED bulbs in my tail lights. Weirdest thing, the brake lights and turn signals won't illuminate when my marker lights are on but work just fine when head lights are on or the headlight switch is pushed all the way in. Any suggestions?? I switched to an electronic flasher unit already and I swear they were working fine when I first got the bulbs. I did replace the tail lamps with new aftermarket ones so there is no corrosion or grounding issue I believe. Any help is appreciated all!!
1967 Dart GT- Brake lights and turn signals won't work when my marker lights are on but work fine when it's headlights on.
- Thread starter Darty67
- Start date
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67Dart273
Well-Known Member
The tail/ park/ head circuit should have nothing to do with signals, except
Grounding of the lamps
Possible wrong contact in the sockets, and may be due to something like poorly indexed (manufactured) or just poor quality LEDS
A wiring fault of some sort AKA crossing the tail circuit to the signal/ stop lamp circuit
A defective lamp/ led. ALWAYS remember. "New" does not mean good quality, capable of working, and of course not even the correct part.
Grounding of the lamps
Possible wrong contact in the sockets, and may be due to something like poorly indexed (manufactured) or just poor quality LEDS
A wiring fault of some sort AKA crossing the tail circuit to the signal/ stop lamp circuit
A defective lamp/ led. ALWAYS remember. "New" does not mean good quality, capable of working, and of course not even the correct part.
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