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Roadmaster Battery Charge Line Kit for Towed Vehicles

Retail: $49.03
Our Price: $40.94
In Stock
Kit allows up to 15 amps from your RV's battery to be used to maintain the charge of your towed car's battery while the car is being towed. Charge line connects to the 6-way or 7-way plug on ...
towed car Receives power from your RV Requires Roadmaster's motor home battery line (RM-156-75 - sold separately) if no charge line is present in your RV Includes 14-guage wire, split wire loom
  • Flat Tow Wiring Harness
  • Battery Charge Line Kit
  • Roadmaster

BrakeBuddy Towed Vehicle Battery Charge Line Kit

Our Price: $56.71
Maintains the battery charge on your towed vehicle while it is being flat towed.Features: Keeps your car's battery charged while it is being flat towed Pulls up to 15 amps from your motorhome's battery Shows LED light when charging
  • Flat Tow Brake System
  • Wiring
  • Battery Charge Line Kit
  • Brake Buddy

Towed Vehicle Battery Charge Line Kit for Demco Air Force One and Stay-IN-Play Duo Braking Systems

Retail: $33.58
Our Price: $29.94
In Stock
Maintains the battery charge on your towed car while it is being flat towed. Works with Demco supplemental braking systems. Includes diode and fuse.Features: Keeps your car's battery charged while it is being flat towed Works with Demco Air Force One and Stay-IN-Play Duo braking systems Includes 10-amp in-line diode and fuse Made in the USA
  • Flat Tow Brake System
  • Wiring
  • Battery Charge Line Kit
  • Demco

Roadmaster Battery Charge Line Kit for Motorhomes

Retail: $86.03
Our Price: $66.60
In Stock
This charge line connects to the battery in your RV to allow up to 15 amps to be transferred to your towed vehicle's battery during towing. Requires RM-156-25 be installed in towed car. car's battery Connects battery to 6-way or 7-way plug at the rear of your RV Requires Roadmaster's vehicle battery line (RM-156-25 - sold separately) if no charge line is present in your towed vehicle
  • Flat Tow Wiring Harness
  • Battery Charge Line Kit
  • Roadmaster

Blue Ox Towed Vehicle Battery Charge Line Wiring Harness

Retail: $129.00
Our Price: $101.19
In Stock
Maintain the charge of your towed car's battery from your coach or tow vehicle with this simple harness. 12V Power line with in-line charger connects to the 6-way or 7-way plug on your vehicle ...
battery to 6-way or 7-way plug at the front of your towed car 4-Function LED indicator on charger makes it simple to see power status Receives power from your RV Requires a dedicated charge line at the rear
  • Flat Tow Wiring Harness
  • Battery Charge Line Kit
  • Blue Ox

Brake Buddy Classic 3 Portable Flat Tow Brake System - Preset - HM39494

Retail: $1,374.00
Our Price: $1,094.57
In Stock
This portable unit gets you smooth braking without a complex installation. Senses the RV braking and applies the car's brakes at an intensity preset by you. Easy to swap between multiple cars; settings adjust for smooth braking for any size car. ready to tow with 1-touch auto start Removes excess vacuum pressure from your car's brakes Checks braking system for errors Keeps car's battery fully charged with 15-amp battery charge line kit
  • Brake Systems
  • Pre-Set System
  • Portable System
  • Brake Buddy
  • Hydraulic Brakes
  • Air Over Hydraulic Brakes
  • Air Brakes
  • Indicator Lights
  • Every-Trip Setup
  • 12V Outlet

New Arrivals — From Our Shop to You!

Chosen by folks who live and breathe this, just like you.

New Arrivals — From Our Shop to You!

Chosen by folks who live and breathe this, just like you.

Kristin
Kristin etrailer team member
Kristin etrailer team member

15

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589

Installations

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Customers Helped

Any questions? Chat us from Missouri

Brake Buddy Select 3 Portable Flat Tow Brake System - Proportional - HM39524

Retail: $1,791.00
Our Price: $1,335.65
In Stock
This portable unit gets you smooth braking without a complex installation. Senses the RV braking and applies the brakes proportionally. Easy to swap between multiple towed cars: settings adjust for safe, even braking for any size car. auto start Removes excess vacuum pressure from your car's brakes Checks braking system for errors Keeps car's battery fully charged with 15-amp battery charge line kit Specs: Compatible with
  • Brake Systems
  • Proportional System
  • Portable System
  • Brake Buddy
  • Hydraulic Brakes
  • Air Brakes
  • Air Over Hydraulic Brakes
  • Wireless Display
  • Every-Trip Setup
  • 12V Outlet

Blue Ox 6-Diode Tow Bar Wiring Kit for Towed Vehicles with Progressive / Animated Tail Lights

Retail: $379.00
Our Price: $246.57
If you want to flat tow your vehicle with animated rear lights and have to use a battery bypass, use this kit to connect power and signal from your motorhome or tow rig. The tail lights will work ...
the 6-way receiver to the plug from your motorhome or tow rig Can also be run off a lead from a battery charge line kit Quality wire, fittings, and a braided sleeve to protect the wiring and your
  • Splices into Vehicle Wiring
  • Diode Kit
  • 6 Round
  • Blue Ox
  • Universal Fit

Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness for Aluminum Truck Bed - 7 Way RV - 9' Long - 50-97-410-010

Our Price: $125.14
In Stock
Mount this connector in your truck bed to hook up your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with factory wiring. 90-Degree connector fits into tight spaces. Aluminum mounting ...
Black: battery charge Red: left turn and stop lights White: ground wire Wire gauges: Black/white: 10 Blue: 12 Brown/red/green/yellow: 14 1-Year limited warranty Note: Steel mounting screws are included
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • Bargman
  • Plug-In
  • Hidden

Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness for Aluminum Truck Bed - 7 Way RV - 7' Long - 54701-007-010

Our Price: $90.87
In Stock
Mount this connector in your truck bed to hook up your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with factory wiring. 90-Degree connector fits into tight spaces. Aluminum mounting ...
turn signal and stop lights Blue: electric brake Black: battery charge Red: left turn signal and stop lights White: ground wire Wire gauges: Black/white: 10 Blue: 12 Brown/red/green/yellow: 14 1-Year
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • Bargman
  • Plug-In
  • Hidden

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector for Aluminum Beds - 7' Long - C56070-07

Our Price: $86.95
In Stock
Mount this 7-way connector in your aluminum truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can ...
: electric brakes Black: 12V battery charge Red: left turn and brake lights White: ground wire Limited 1-year warranty
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • CURT
  • Plug-In
  • Hidden

Brake Buddy Stealth Supplemental Braking System - Proportional - HM39530

Retail: $1,903.60
Our Price: $969.35
In Stock
Get fully proportional braking with a system that never has to be removed, replaced, or reset. Actuator installs out of sight and remains virtually invisible when your car isn't being towed. Controller also works as a trailer brake controller. or an in-line fuse. If you don't already have a 7-way trailer connector at the rear of your RV, you can use etrailer.com's exclusive 7- and 4-way brake control installation kit (ETBC7 - sold
  • Brake Systems
  • Proportional System
  • Fixed System
  • Brake Buddy
  • Hydraulic Brakes
  • Wireless Display
  • One-Time Setup
  • Vehicle Battery

Roadmaster InvisiBrake Flat Tow Brake System - Preset - RM-8700

Retail: $1,393.94
Our Price: $1,255.00
In Stock
... comfortable braking. Charges car battery while towing. connected to motorhome Components install permanently and discreetly Charge your car battery as you flat tow Trickle-charges constantly Monitor your towed car's braking with LED that installs in RV's
  • Brake Systems
  • Pre-Set System
  • Fixed System
  • Roadmaster
  • Hydraulic Brakes
  • Air Brakes
  • Indicator Lights
  • One-Time Setup
  • Vehicle Battery

Replacement Air Hose Kit for Roadmaster InvisiBrake Flat Tow Brake System and Second Vehicle Kit

Our Price: $79.58
Replace the air hoses of your Roadmaster InvisiBrake (RM-8700) or InvisiBrake second vehicle kit (RM-98700).Features: Replaces the air hoses for your Roadmaster InvisiBrake (RM-8700) or Invisibrake second vehicle kit (RM-98700)
  • Flat Tow Brake System
  • Air Lines
  • Second Vehicle Kit
  • Hoses
  • Roadmaster

Second Vehicle Kit for Brake Buddy Flat Tow Brake Systems - Classic II and 3 - Select II and 3

Our Price: $185.53
Get all the wiring components you need to use your Brake Buddy Classic 2 or 3 or Select 2 or 3 on another towed vehicle.Features: Adds the necessary wiring components to a second towed vehicle so you can use your portable Brake Buddy braking system Includes: Breakaway kit Dash-mount connector Battery charge line kit
  • Flat Tow Brake System
  • Second Vehicle Kit
  • Brake Buddy

TowSmart ProClass 7-Pole Trailer Connector Socket - Vehicle End - TS37RR

Our Price: $14.28
You're replacing a damaged socket or wiring from scratch. This 7-way gives you solid terminals, a spring-loaded lid, and a mount that stays put. You wire it up once and don't have to mess with it again. 7-Way for Reliable Trailer Hookups This ProClass 7-blade socket mounts at the vehicle end and provides a clean connection point for your trailer wiring. It supports lighting, brake signals, battery charge
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • 7 Blade
  • TowSmart
  • Universal Fit

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector for Aluminum Beds - 10' Long - C57010

Retail: $178.95
Our Price: $143.95
In Stock
Mount this 7-way connector in your aluminum truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can ...
Blue: electric brakes Black: 12V battery charge Red: left turn and brake lights White: ground wire Limited 1-year warranty
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • CURT
  • Plug-In
  • Hidden

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector for Aluminum Beds - 7' Long - C57008

Retail: $158.95
Our Price: $119.95
In Stock
Mount this 7-way connector in your aluminum truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can ...
: electric brakes Black: 12V battery charge Red: left turn and brake lights White: ground wire Limited 1-year warranty
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • CURT
  • Plug-In
  • Hidden

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 7' Long - C56071

Retail: $138.95
Our Price: $109.95
In Stock
Mount this 7-way, RV-style connector in your truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can ...
: reverse lights Green: tail lights Brown: right turn and brake lights Blue: electric brakes Black: 12V battery charge Red: left turn and brake lights White: ground wire Limited 1-year warranty
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • CURT
  • Plug-In
  • Hidden

Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness - 7 Way RV - 7' Long - 54701-007

Retail: $113.89
Our Price: $73.97
In Stock
Mount this connector in your truck bed to hook up your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with factory wiring. 90-Degree connector fits into tight spaces. Mounting bracket ...
steel screws Specs: Harness length: 7' Wire configuration: Yellow: center auxiliary Green: tail and license lights Brown: right turn and stop lights Blue: electric brake Black: battery charge Red
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • Bargman
  • Plug-In
  • Hidden

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long - C56001

Retail: $158.95
Our Price: $125.95
In Stock
Mount this 7-way, RV-style connector in your truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can ...
Green: tail lights Brown: right turn and brake lights Blue: electric brakes Black: 12V battery charge Red: left turn and brake lights White: ground wire Limited 1-year warranty
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • CURT
  • Plug-In
  • Hidden

TowSmart ProClass Multi-Tow 7-Way and 4-Way Flat Trailer Connector - Vehicle End - TS87RR

Retail: $37.99
Our Price: $27.88
You've got different trailers, each with its own plug. Instead of swapping harnesses or using sketchy adapters, you mount this dual-socket connector once. It gives you a 7-way and a 4-flat in one spot, ready for whatever you're towing next.: Type: 7-way RV-style blade and 4-way flat (vehicle end) Functionality: Supports: Lights, electric trailer brakes, battery charge line, and auxiliary power Hardwire install: Designed for direct wiring
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 7 Blade
  • 4 Flat
  • TowSmart
  • Universal Fit

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long - C56000

Retail: $195.95
Our Price: $137.95
In Stock
Mount this 7-way, RV-style connector in your truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can ...
Green: tail lights Brown: right turn and brake lights Blue: electric brakes Black: 12V battery charge Red: left turn and brake lights White: ground wire Limited 1-year warranty
  • Fifth Wheel and Gooseneck Wiring
  • Vehicle End Connector
  • 7 Blade
  • CURT
  • Plug-In
  • Hidden

TowSmart ProClass Twist Mount 7-Way and 4-Way Flat Trailer Connector - Vehicle End - TS79RR

Retail: $31.99
Our Price: $25.00
You're swapping out a factory socket and want a tight fit that won't rattle loose. This twist-mount connector snaps into your trucks factory knockout and gives you both 7-way and 4-flat outputs. You wire it once and trust it's gonna hold.) Functionality: Supports: lights, electric trailer brakes, battery charge line, and auxiliary power Hardwire install: blunt-cut leads connect to vehicle circuits Construction: Mounting: twist-lock into factory
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • 7 Blade
  • TowSmart