Will The Roadmaster Base Plate RM-521448-5 Fit A Roadmaster Sterling Tow Bar?
Updated 04/28/2026 | Published 04/15/2026
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Question:
Can you confirm that this base plate RM-521448-5 will work with a Roadmaster Sterling towbar? I already have a Blue OX BRK2022 Patriot tow brake and safety cables, but I do require the lighting harness or other options for break lights and turns signals. Could you recommend options. This systems is all for a 2017 Jeep Wrangler Unlimited Sahara. Thanks
asked by: Bill K
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Expert Reply:
Hi Bill!
The Roadmaster Base Plate # RM-521448-5 for your 2017 Jeep Wrangler Unlimited Sahara will indeed fit your Sterling tow bar. The last picture you included showed what I needed to see to confirm that. We actually have a Sterling tow bar attached to this exact base plate and I included a picture of that for you to check out.
For the wiring, I highly recommend the Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord # RM-15267. This has everything you need to get you lights working as well as being able to hook up something like the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25.
The last two things you will need are the Roadmaster 12 Volt Outlet Kit, 20 amps # RM-9332 and the Roadmaster Brake-Lite Relay Kit for Towed Vehicles # RM-88400. The outlet kit will provide power to the Patriot braking system and the Brake-Lite Relay Kit will prevent your Jeep's brake lights from canceling your RV’s turn signals.
What kind of RV are you going to be towing your Jeep with?
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Product Page this Question was Asked From
Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Twist Lock Attachment
- Partially Hidden
- Roadmaster
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on Tow Bar Base Plate
Bill K.
4/27/2026
Thanks for confirmation. I’ll get this all on order. I have a 2020 Jayco Greyhawk Prestige 29MVP. Bill