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Old October 21st, 2021, 04:25 PM
Forgue Forgue is offline
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Join Date: Oct 2021
Location: Naperville IL
Truck: 1965 c10
Age: 57
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Unhappy Turn signal dilemma

Hi all! New to the forum and just started my project. I am quickly trying to get up to speed on some wiring.....and here is what I can't grasp. I aplolgize if it has been addressed in a prior thread.

Replaced the turn signal switch and harness and dash. All front signals work great. Left rear tail lights and turn signal works normal. When I use the right signal it triggers both rear lights to blink like hazards are on, but not bright like a turn signal.

I have traced all the wiring from back thru the firewall. Brown is power to tail lights. Yellow is to left signal, dark green is to right signal. An additional Brown from left turn signal to license plate light and all grounded to bed. I cleaned all ground contacts bed to frame, light buckets to bed etc. Both old and new switch cause the issue so assuming the signal switch is correct. Can't figure out why right signal flashes both bulbs
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