Dim Left Taillight When Right Turn Signal Is Used on a 2025 Jeep Rubicon with Blue Ox Diode Kit

Updated 06/16/2026 | Published 06/14/2026

Products Featured in This Question

Replacement 6-Amp Diodes for Blue Ox Tow Bar Wiring Kit - Qty 12

(3)

$102.82

Roadmaster Smart Diodes for Variable Voltage LED Tail Lights - Qty 2

(379)

$91.76

Question:

Hello, I purchased the BX88159 Diode kit to use with my 2025 Jeep Rubicon that has LED taillights. The issue Im having is that the left taillight comes on dim when the right directional turn signal is being used. Ive checked the ground wire, and it is functioning. Im wondering if its because the Jeeps lights are LED and the motorhomes lights are incandescent. Thank you, Bill

asked by: Bill

Expert Reply:

Hi Bill,

Yes, what you're seeing is likely related to the Jeep's factory LED taillight system rather than the fact that your motorhome uses incandescent bulbs. The 2025 Jeep Rubicon uses computer-controlled LED lighting that can operate at varying voltages, and that can cause electrical feedback through a standard diode kit. The result is often exactly what you're describing, where the opposite taillight glows dimly or "ghosts" when a turn signal is activated.

In situations like this, the solution is typically to switch from the standard part # BX88159 diode kit to a Smart Diode setup part # RO54FR. The Smart Diodes are designed specifically for newer vehicles with variable-voltage LED lighting systems and help prevent the backfeeding and false illumination that can occur with traditional diodes. These are recommended by Roadmaster for your Rubicon especially if you have Parksense.

I know it's frustrating to get everything wired up correctly and then run into an issue like this, especially when you're trying to make sure the Jeep's lights behave predictably and safely while towing. The good news is that what you're seeing is a known characteristic of many modern LED lighting systems, and it's usually resolved by using the Smart Diode style wiring components.

What trips or trails do you usually bring the Rubicon on behind your motorhome?

expert reply by: Heather A