Bronco Nation

Wiring advice, rear license plate lamp

tmizz
Oct 09, 2024

Rank 0

Oct 09, 2024

Recently installed a spare tire delete kit and had to purchase a second license plate light since I’m leaving the stock bumper for now. The pigtail plugging into the new license plate lamp has three green wires. (wife accidentally thew instructions in the garbage :) but pigtail part number is HU2Z-14S411-BA) I would like to wire the license plate lamp it into an aux switch but unclear how to identify which is positive, ground, etc, Anyone have any advice as to best way to test this? I have a spare 12 volt battery I could connect to for proof of concept. Thanks in advance!
PS - looked for PDF of wiring instructions online but no luck.

Rank III

Oct 10, 2024

#1
3 wires is usually HI, LOW, GROUND, from memory on my old mortocycle hacking days and trailer fixes.
You should be able to easily futz around and find out which is ground by elimination.
In order to illuminate you must have GROUND + LOW or Ground + HIGH
(Low being the always on running light and High being the light that comes on when you depress the brake)

Hopefully that is enough to get you going, and someone with more electrical knowledge can fill in the real blanks :)

Dan
BroncoBikini.com - Waterproof, 100-MPH Bimini Tops !

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