Troubleshooting Optronics BUL72CB Clear Oval 10 Diode LED with Only 4 Diodes Lighting

Updated 01/03/2018 | Published 01/02/2018

Products Featured in This Question

Optronics LED Trailer Utility Light - Submersible - 10 Diodes - Oval - Clear Lens

(362)

$22.59

2-Wire Pigtail for Optronics Backup and Utility Trailer Lights - 2-Prong PL-3 Plug

(119)

$5.53

Right Angle 3-Wire Pigtail for Optronics Trailer Lights - 3-Prong PL-3 Plug - 10" Lead

(647)

$7.99

Question:

WHY WHEN I HOOK THE LIGHT ASSEMBLY UP TO POWER ONLY THE MIDDLE FOUR DIODES ARE THE ONLY ONES THAT LIGHT UP? HAVE IT WIRED RIGHT IVE CHECKED AND DOUBLE CHECKED THAT. I BOUGHT 2 OF THESE AT THE SAME TIME AND BOTH DO THE SAME THING. USING THEM AS NON D.O.T B/U LIGHTS PUT TRUCK IN REVERSE NO CHANGE HIT BRAKES NO CHANGE TURN LIGHTS ON NO CHANGE...

asked by: JOEY N

Expert Reply:

If you are using the 2-Wire Pigtail for Optronics Trailer Lights - 2-Prong PL-10 Plug - 10" Lead # A45CB with the Optronics # BUL72CB lights, then all 10 diodes should be lighting. If you are using the 3 wire pigtail # A47PB then you only need to connect the white and red or the black and white wires. The red or black wire should give you the full 10 diodes, where one of them would only give you the center 4. It sounds like the connections are to the wrong spot on your lights since you are getting the center 4. You will want to switch the colored wire to the other location.

To wire this light for backup, you will want to tap into your reverse light function on your trailer wiring or connect to the reverse light behind the tail lights in your vehicle.

expert reply by: Jason S