Wire Color Functions For The Furrion Vision S Side Marker Camera Lights

Updated 05/18/2026 | Published 03/25/2023

Question:

I have a 21 jayco jayflight 174bh. When getting it inspected they found the right front side marker light out. Its a furrion vision s. I just purchased a new one from you. Id like to know how to wire it up without the camera because I dont have them. I couldnt remember if the yellow or red was hooked up or not. I remember the two white ones and the black one was connected to the connector. I tried a regular light but when it was wired to the two white wires it worked but my tail lights and brake lights wouldnt work. Im thinking if I connect the black to the connector like I have it now, I put rhe original back on and now the tail and brake lights work again just not the side one, I assume it will all work.

asked by: Todd S

Expert Reply:

The wire colors/functions of the Furrion side marker lights # FCE48TASL are as follows:

Red: V+ Camera - This is your 12v power for the camera and would need to be connected to the 12v power wire ran from your junction box to the light.

Black: Ground - This goes to the ground wire ran from you junction box to the light or just directly to the frame, depending on your setup.

Yellow: Trigger - This is only used if you connect it to the left/right turn signal. Typically it just gets capped off because most trailers won't have then wires ran for this feature.

Brown: V+ Lamp - This is the 12v power for the light and will also need to be connected to the 12v power wire from your junction box. I typically bundle this with the Red wire and butt connector it to the power wire for the light.

The wiring for your tail lights will typically run from the junction box at the front of the trailer back to the running lights and then to the tail lights. If you have the side marker lights working but the tail lights aren't then you have a connection issue at the tail light. If you don't know what the function of your trailer wires are then you would need to either trace them or put power to them with a 12v battery and see what they turn on.

I've attached a short video below where I also talk about the wire functions for this camera/light.

expert reply by: Kevin C

Ted P.

5/18/2026

I have a 2025 Forest River FSX, when I took off my side marker I have a yellow and white wire, is yellow the ground

Claire H.

5/18/2026

@TedP Wire colors vary by manufacturer but the white is almost universally the ground wire. The yellow wire is either the power or is tied into turn signal depending on how the trailer is wired. You can test it by turning on the lights and using a circuit tester to see which wire is getting power.