Installation and Wiring of P2 Brake Controller On a Fleetwood Freighliner MotorHome with Air Brakes
Question:
What is the best procedure for wiring to a fleetwood motorhome with a freightliner chassis,
asked by: Jim
Expert Reply:
The best procedure for installing the Tekonsha Prodigy P2 Brake Controller, part # 90885, on your Fleetwood Motorhome with a Freightliner chassis and air brakes is to follow the Brake Controller manufacturers instructions.
I contacted our representative at Freightliner, he informed me that if the motor home is a 2004 or newer there is a 6 pin connector under the dash that will be labeled either "TRBRK" or "TBC." This connector can be removed and the wires can be hard wired to the brake controller.
If the motor home is older than 2004 you will have to pickup the Brake Signal off of the Treadle Valve at the back of the Brake Pedal. The Treadle Valve is a valve that is operated by the Brake Pedal and directs air pressure from the dry reservoir tank to the brake chambers. The Treadle Valve also has a pressure switch that activates the brake lights on the rear of the vehicle.
If your motor home is older than 2004 I would recommend getting the brake controller installation kit # ETBC7, which includes the # 37185 adapter, as well as everything else you will need to complete the brake controller installation. You may need some extra wire depending on the length of the motor home, part #10-2-1.
To install the #37185 adapter, you would first plug it into your 4-Way connector, or splice into the vehicles brake, turn and tail light functions, and then connect the additional wires.
The additional wires would be installed as follows:
White: Ground, attached to a suitable location on the vehicle frame.
Black: 12v power lead wire, run to the vehicle positive battery terminal, with the 40amp circuit breaker included in the # ETBC7 kit.
Blue: Electric brake wire, connected to the blue electric brake wire coming from the brake controller in the vehicle cab.
Purple: This is an auxiliary wire, and can be used as a 12v power source, or to power a reverse light or reverse lockout function if needed. If not, this wire can be tied up.
If you do not already have a brake controller, I would recommend that you use the Prodigy P2 brake controller # 90885. This brake controller includes a pigtail that you will use to hard wire the unit to your vehicle.
The pigtail has four wires that will need to be connected as follows:
The 4 brake controller wire functions are:
White: Ground, attached to a clean piece of unpainted metal.
Black: 12v lead, attached to the vehicle positive battery terminal with either the 20amp or 30amp circuit breaker included in the # ETBC7 kit. Use the 20amp breaker if your trailer has 2 to 4 brakes, or the 30amp if the trailer has 4 to 8 brakes.
Blue: Electric brakes, attached to the blue electric brake wire from the # 37185 adapter.
Red: Stoplight switch, normally located directly off the vehicles brake pedal (in your case the treadle valve located behind the brake pedal)
To give you a closer look at how the adapter and brake controller are typically connected, I am including links to a set of videos demonstrating an installation.
Products Referenced in This Question
Deka Jacketed 2 Wire, 10 Gauge, Brake Wire - per Foot
- Wiring
- Wire
- Jacketed Wire
- 2 Wire
- 10 Gauge
- Deka
more information >
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Product Page this Question was Asked From
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LED Display
- Up to 360 Degrees
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Suspension Enhancement
- Search Results: 3035
- Shop: Brake Controller
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Nissan and Infiniti
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford, Lincoln, Mercury
- Shop: Blind Spot Detection
- Shop: SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle
- Shop: Blind Spot Monitoring System for Towable Campers, Travel Trailers, and 5th Wheels Up to 40' Long
- Shop: Ventline Ventadome Trailer Roof Vent - Manual - 14-1/4" x 14-1/4" - White
- Shop: Furrion Automatic Transfer Switch - 50 Amp - 125/250V
- Shop: Vehicle Tow Bar Wiring
- Video: Roadmaster Carts and Dollies RM-300220-30 Review
- Video: Roadmaster Tow Bar Wiring - Bypasses Vehicle Wiring - RM-2120 Review
- Video: Optronics Tow Bar Wiring - Bypasses Vehicle Wiring - TL21RK Review
- Search Results: roadmaster rm3477
- Search Results: trailer lock
- Search Results: magnetic trailer light kit
- Search Results: c69hr
- Search Results: brake controller wiring
- Article: Brake Controller Installation: Starting from Scratch
- Shop: Trailer Wiring
- Q&A: Installing a Brake Controller in a Freightliner/Fleetwood Discovery Motorhome
- Q&A: Trailer Brake Controller Installation in 2001 Fleetwood Discovery to Tow Race Trailer
- Search Results: electric brake controller kit
- Video: Choosing the Right Brake Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Vehicle Tow Bar Brake System
- Video: Roadmaster Even Brake Portable Braking System Installation - 2019 Jeep Grand Cherokee
- Video: Review of Dometic RV Toilet Parts - Replacement Hand Sprayer w/ Vacuum Breaker - DOM75FR
on Trailer Brake Controller
