RoadMaster BrakeMaster Second RV Kit # RM-98300 Wiring into Cold Side of Brake Light Switch
Updated 10/30/2020 | Published 10/28/2020 >
Question:
Brake li switch has 4 small wires going to it 1hot does it matter that those wires are so small . It does have a trailer brake under dash did not know if I can grab a cold side off that . This started with a second motorhome kit going from air in first motorhome to now going from hydraulic brakes to the add on air compressor kit from Roadmaster thanks for your help
asked by: Robert B
Helpful Expert Reply:
Yes, you can use RoadMaster BrakeMaster Second RV Kit # RM-98300 for motorhomes with hydraulic brakes. The size of the wires coming off the brake light switch should not be a problem but if it's easier you can wire into the brake switch wire going into the motorhome's brake controller connector. It should be the red wire.
Check out the video linked below for more details on this product.
Product Page this Question was Asked From
Second Motorhome Kit for Roadmaster BrakeMaster Systems for Hydraulic Brakes
- Accessories and Parts
- Flat Tow Brake System
- Second Vehicle Kit
- Roadmaster
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Base Plate for Tow Bar
- Shop: Second Motorhome Kit for Roadmaster BrakeMaster Systems for Hydraulic Brakes
- Shop: etrailer SD Non-Binding Tow Bar for Blue Ox and Curt Base Plates - RV Mount - 2" Hitch - 6K lbs
- Search Results: blue ox hitch anti~rattle
- Search Results: tow bar
- Search Results: blue ox tow bar
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Shop: etrailer SD Non-Binding Tow Bar for Roadmaster Crossbar-Style Base Plates - RV Mount - 6,000 lbs
- Shop: etrailer XHD Non-Binding Tow Bar for Roadmaster Crossbar-Style Base Plates - RV Mount - 10,500 lbs
- Shop: Roadmaster 12mm Metric-to-Standard Brake Line T Adapter for BrakeMaster Proportioning Valve - Qty 1
- Video: How to Install the Blue Ox Base Plate Kit on a 2016 Cadillac SRX
- Video: A Closer Look at the Blue Ox Acclaim Non-Binding Tow Bar
- Shop: Vehicle Tow Bar Wiring
- Video: Comprehensive Review: Roadmaster StowMaster Tow Bar
- Video: Mount: etrailer SD Non-Binding Tow Bar for Blue Ox and Curt Base Plates on a 2021 Subaru Crosstrek
- Q&A: Is The Metric-To-Standard Brake Line Tee Included In The Second Motor Home Kit For F-53 Chassis?
- Shop: Roadmaster Falcon 3HD Tow Bar - RV Mount - 2" Hitch - 10,000 lbs
- Shop: Vehicle Tow Bar Brake System
- Q&A: Parts Needed to Flat Tow 2012 Cadillac SRX AWD Behind Motorhome
- Q&A: Which is Better Roadmaster or Blue Ox Tow Bar
- Search Results: base plate for tow bar
- Article: Trailer Wiring Diagrams
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Q&A: Recommended Parts for Flat Towing a 2025 Ford Maverick
- Search Results: vehicle tow bar wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Wiring
- Q&A: Choosing Between the Brake Buddy Select 3 and the Blue Ox Patriot Supplemental Braking System
- Article: Best Vehicles to Flat Tow Behind an RV
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles


