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Discussion Starter · #1 ·
I have an issue with the brake lights on my trailer, I am only getting 9v on the pin for brake lights on the connector from the Ranger, even on the plug where the tow wiring harness connects underneath.
It means the LED brake lights don’t illuminate as their circuitry isn’t triggering the high intensity setting.

I am pulling my hair out! I can’t for the life of me figure out why it’s only supplying 9 instead of 12v.
Does anyone have any idea why this might be?
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