Electrical Issues
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4th Gear
Joined: Jun 2023
Posts: 4
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Electrical Issues
I experienced a weird issue with my LT signal that started yesterday. When I turn my headlights on (running lights OR headlights) my LT signal indicator is constantly lit on the dash. The flasher DOES NOT engage but it the dash indicator is lit. The LT Rear signal filaments are NOT on until I initiate via MF Stalk.
If I turn the LT blinker on it will flash on the dash (and the lights will blink as normal).
I do have relays linked to Running / LT Signal / RT Signal wires to drive updated side mirrors and a rear light bar (no t-taps, but I will check connections). Unfortunately if I pull the relay fuses to disable, the issue is still present. Everything has been installed and working fine for two years.
I’ll continue to troubleshoot but curious if it could be a module or something? Dash cluster, horn, radio, interior lights, etc etc all work as they should though I am currently troubleshooting cruise control since I replaced my steering wheel.
Thanks for your input!
If I turn the LT blinker on it will flash on the dash (and the lights will blink as normal).
I do have relays linked to Running / LT Signal / RT Signal wires to drive updated side mirrors and a rear light bar (no t-taps, but I will check connections). Unfortunately if I pull the relay fuses to disable, the issue is still present. Everything has been installed and working fine for two years.
I’ll continue to troubleshoot but curious if it could be a module or something? Dash cluster, horn, radio, interior lights, etc etc all work as they should though I am currently troubleshooting cruise control since I replaced my steering wheel.
Thanks for your input!
Last edited by schreibers; Aug 24, 2025 at 04:32 PM. Reason: update
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,598
Likes: 145
From: SE Georgia
I'm going to say it's the multifunction switch. usually when they fail you hear a faint rhythmic clicking in the dash. down by the gas pedal. the MF sends pulses to the blinker relay. Everything works like normal, but it clicks and clicks and clicks.
in your case, I'd recommend basic troubleshooting by disconnecting all the tag-along circuits you've connected. Verify you don't have a relay reverse feeding or other weird failure in your circuits.
and FWIW, recheck your steering wheel wiring. you may have pinched something when replacing it or the flashing panels
in your case, I'd recommend basic troubleshooting by disconnecting all the tag-along circuits you've connected. Verify you don't have a relay reverse feeding or other weird failure in your circuits.
and FWIW, recheck your steering wheel wiring. you may have pinched something when replacing it or the flashing panels
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