What Is The Difference Between The Roadmaster Smart Diode Kits RM63MR And RM38FR?

Updated 06/18/2026 | Published 06/17/2026

Products Featured in This Question

Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - 7-Way to 6-Way Adapter Cord

(389)

$235.03

Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - 7-Way to 6-Way Adapter Cord

(387)

$264.82

Question:

What is the difference between this kit RM38FR and the kit RM63MR and which kit would I need for my 2024 Jeep Grand Cherokee Summit?

asked by: Rick T

Expert Reply:

Hi Rick,

For your 2024 Jeep Grand Cherokee Summit, I recommend the Roadmaster Smart Diode Kit #RM63MR. The good news is that there is no functional difference between # RM63MR and # RM38FR. They contain the same Smart Diode components and work the same way.

The reason I recommend # RM63MR for the Grand Cherokee is that it includes instructions tailored specifically to Jeep models equipped with the ParkSense system, while # RM38FR comes with more generalized installation instructions. Using the Jeep-specific kit can help make the installation process a little more straightforward and give you added confidence that you're following the correct procedure for your vehicle.

Do you already have the rest of your flat towing setup picked out for the Jeep, such as the base plate, tow bar, braking system, and wiring? If not, I'd be happy to help make sure everything works together for your 2024 Grand Cherokee Summit.

expert reply by: Heather A