How To Install The Roadmaster Diode Wiring Kit # RM-15267 On A 2024 Ford F-250

Updated 12/22/2025 | Published 10/29/2024

Products Featured in This Question

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord

(3186)

$180.17

Hook Probe Circuit Tester

(60)

$12.41

Question:

I have a 2024 f250 limited super duty, do you have a video on the install? Or the taillight assembly wiring diagram?

asked by: Scott J

Expert Reply:

Hey Scott,

We don't currently have a video for your specific year/make/model but I've attached a video below that Jake made for the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 on a F-150 that will help walk you through the process. When you get the tail lights out to test your wires to see which is your running light and which is your stop/turn you'll want to use a hook and probe tester like part # PTW2993 to poke into the wires. Just turn on whatever light function you're testing for and poke into each wire casing with the tester to see which lights up.

We unfortunately don't have a guide to tell us which wire color these functions will be but you can ask Ford if they do and skip past the testing phase.

expert reply by: Kevin C

Heather A.

12/22/2025

Hey Scott, were you able to test the tail light wires on your F-250 using the probe tester? Knowing how that went could help others wiring the same setup. Your update could make it easier for the next person working on a similar truck.