Flat Tow Setup for 2018 Lincoln Navigator L and a 2021 Ram 3500  

Question:

Expert Reply:

We specialize in flat towing Brandon, I can help with that!

There's a few components needed to get you all setup, baseplate, towbar, safety cables, a supplemental braking system and a wiring harness for lights.

Roadmaster Nighthawk All-Terrain Tow Bar w/ LED Lights # RM-676 will be compatible with the baseplates on both vehicles since we're sticking with Roadmaster.

BASEPLATES - will connect to towbar to pull vehicles behind RV
2021 Ram 3500 - Roadmaster Direct-Connect Base Plate Kit # RM-522204-5
2018 Lincoln Navigator L - Roadmaster Direct-Connect Base Plate Kit # RM-524457-5

SAFETY CABLES - security for your tow system
Roadmaster 64" Single Hook, Straight Safety Cables # RM-645

BRAKING SYSTEM -
Blue Ox Patriot Portable Flat Tow Brake System # BRK2022
It's portable, has a simple setup and can be used with either vehicle.
A 12 Volt Outlet Kit # RM-9332 may be required if you don't have one in the vehicles currently.

WIRING HARNESS FOR LIGHTS & BRAKES - 7 to 6-wire adapter cord runs power from RV to towed car
2018 Lincoln Navigator L
Roadmaster 4-Diode Universal Wiring Kit # RM38FR
2021 Ram 3500
Roadmaster 4-Diode Universal Wiring Kit # RM-15267

CHARGE LINE KIT - maintains battery charge on vehicles
Roadmaster Battery Charge Line Kit for Towed Vehicles # 156-25
(Maintains the battery charge in your towed vehicle while the car is being towed)
Roadmaster Battery Charge Line Kit for Motorhomes # 156-75
(Allows power from your RV's battery to be used to maintain the charge of your towed vehicle's battery while the car is being towed)

What motorhome are you using to tow these vehicles? Are you doing these installs or having an installer set this up?

expert reply by: James D

0

Christopher

4/11/2026

These were very easy to set up we set them up on a 2022 ram 3500 dually and also a 2023 ram rebel 1500 was incredibly easy to mount. They have also been extremely reliable. We have flat-toed the half ton pickup close to probably 75 to 100,000 mi all across the nation

Christopher

4/11/2026

@Christopher

James D.

4/13/2026

@Christopher That's amazing and we appreciate that feedback!

Bob

4/11/2026

I’m pulling my 2022 Ram 2500 4x4 with a 2017 Forestriver FR3 motor home. The mounting brackets were very easy to install. No drilling needed. I did get an auxiliary braking system installed in the truck. Installing the brackets the grill had to be opened up just enough to let the brackets pass through. I’m very happy with the results. Towed it between Western Pa. and South Florida several times.

Brandon F.

5/10/2026

Hi James. Really appreciate the in-depth list. My preference is to have an installer do the work, for various reasons. We’ll be using a 2011 Damon Tuscany 42RQ

James D.

5/11/2026

@BrandonF You're welcome my friend, definitely understand having an installer set this up for you. I attached our installer locator if you needed assistance finding someone for the install.

Helpful Links

installer/near-me/