How to Run Air Line on Motorhome to Activate Roadmaster BrakeMaster System
Updated 10/22/2018 | Published 10/20/2018
Question:
How to get air supply to rear of Holaday Rambler Neptune to operate air brakes on toad. The brake mechanism is Roadmaster brakemaster 9000. Were to pickup the air supply for this braking device? Thanks in advance
asked by: Doug
Helpful Expert Reply:
The instructions for installing the air line on your Holiday Rambler Neptune from the Roadmaster BrakeMaster, like part # RM-9160, is fairly extensive but if you check out page 10 of the linked instructions for the BrakeMaster you can see that the following is stated:
There are three possible connection points for the motorhome air line —
1 - If the motorhome has air brakes, the line can be attached to an open port at the air brake relay valve.
2 - If the motorhome has air over hydraulic brakes, the line can be attached to an open port at the main brake air booster housing.
3 - If there is no open port, a tee must be used. In this step, you will attach the motorhome air line at one of these three points, then route it to the rear of the motorhome.
Please note that a complete flat towing setup includes a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking system, and possibly a high-low adapter. If you do not have all of these components just let me know and I can make some additional recommendations for you.
Product Page this Question was Asked From
Roadmaster BrakeMaster for RVs w/ Air or Air-Over-Hydraulic Brakes - Proportional
- Flat Tow Brake System
- Brake Systems
- Proportional System
- Every-Trip Setup
- Vehicle Battery
- Fixed System
- Not Power Assist Brake Compatible
- Air Brakes
- Air Over Hydraulic Brakes
- Indicator Lights
- Roadmaster
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Replacement RV-Side Quick Disconnect Kit for Roadmaster BrakeMaster Air Line
- Q&A: Fuse Location for 12-Volt Accessory Feed to 7-Way Trailer Connector on 2005 Chevy Silverado
- Shop: Vehicle Tow Bar Brake System
- Video: Review of Roadmaster Tow Bar Braking Systems - Second RV Kit - RM-98200
- Video: Replacement Brake Line Hose Bracket for Demco Brake Line Kits Feature Review
- Shop: Replacement Brake Line Hose Bracket for Demco Brake Line Kits - Qty 1
- Shop: Second Motorhome Kit for Roadmaster BrakeMaster Systems for Air or Air-Over Hydraulic Brakes
- Shop: Roadmaster BrakeMaster for RVs w/ Air or Air-Over-Hydraulic Brakes - Proportional
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Search Results: trailer hitch
- Search Results: trailer tires and wheels
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer wiring
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Blue Ox Patriot Portable Flat Tow Brake System - Proportional
- Article: How to Measure for Trailer Hitch Drop
- Shop: Suspension Enhancement
- Search Results: trailer jack
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Shop: Base Plate for Tow Bar
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Q&A: Does etrailer Carry Furrion Chill Cube w/ Heat Pump to Replace Dometic Duo-Therm
on Flat Tow Brake System
