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Roadmaster Brake-Lite Relay Kit for Towed Vehicles - RM-88400

Retail: $50.12
Our Price: $38.76
In Stock
Relay works with your tow bar wiring system to ensure that your towed vehicle's turn signal lights flash in tandem with your RV's lights. diode (RM-790; sold separately). Ground the white wire to your towed car's frame. Secure the relay with the included wire ties.
  • Brake Light Relay
  • Roadmaster

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56200

Retail: $127.99
Our Price: $74.48
Plug-and-play custom harness gets turn and brake signals on your towed car with no hardwiring or splicing, and no effect on your warranty. The built-in diodes protect your car from electrical feedback. connect to motorhome - sold separately Includes wiring harness, mounting bracket, and installation hardware 90-Day warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • Hopkins

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord - RM-15267

Retail: $206.35
Our Price: $146.93
In Stock
This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent damage from electrical feedback. Includes 7-way to 6-way coiled adapter cord and 6-way socket. length: 27' Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) A wiring converter (118158 - sold separately) and 2 additional
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 4-Way Flat Connectors - RM-154

Retail: $117.98
Our Price: $87.63
In Stock
This wiring kit carries your RV's brake and turn signals to your towed car's tail lights. Diodes prevent damage from electrical feedback. Connects RV and towed car with 4-pole flat plugs. Includes installation hardware.; long Plastic loom: 3' long Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) A wiring converter (118158 - sold separately) and
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - 7-Way to 6-Way Adapter Cord - RM38FR

Our Price: $255.53
In Stock
Smart diodes are our favorite option for getting brake and turn signals on your towed car. They are really well-made and reliable, plus pretty easy to install. This complete kit includes everything you need for multiplex LED tail lights. Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) If your motorhome has a separate lighting system, where the brake and turn
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - 7-Way to 6-Way Adapter Cord - RM63MR

Our Price: $205.31
In Stock
Smart diodes are our favorite option for getting brake and turn signals on your towed car. They are really well-made and reliable, plus pretty easy to install. This complete kit includes everything you need for multiplex LED tail lights. Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) If your motorhome has a separate lighting system, where the brake and turn
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

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

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Any questions? Chat us from Missouri

Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - RM47ZR

Retail: $162.37
Our Price: $144.87
In Stock
Smart diodes are our favorite option for getting brake and turn signals on your towed car. They are really well-made and reliable, plus pretty easy to install. This kit is for variable voltage/multiplex LED tail lights. harness length: 27' Limited lifetime warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) If your motorhome has a separate
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster
  • 27 Foot Long Harness

Roadmaster Smart Diode Kit for Variable Voltage Incandescent Tail Lights - 7-to-6-Way Adapter Cord - RM26FR

Our Price: $302.17
In Stock
Smart diodes are our favorite option for getting brake and turn signals on your towed car. They are really well-made and reliable, plus pretty easy to install. This complete kit includes everything you need for multiplex incandescent tail lights. warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) If your motorhome has a separate lighting system, where the brake and turn
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights - RO44FR

Our Price: $154.03
In Stock
Smart diodes are our favorite option for getting brake and turn signals on your towed car. They are really well-made and reliable, plus pretty easy to install. This kit is for variable voltage/multiplex LED tail lights.: 5 amps Maximum voltage: 16 volts Wiring harness length: 27' Limited lifetime warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster Smart Diode Kit for Variable Voltage Incandescent Tail Lights - RO94FR

Retail: $134.98
Our Price: $124.30
In Stock
Smart diodes are our favorite option for getting brake and turn signals on your towed car. They are really well-made and reliable, plus pretty easy to install. This kit is for variable voltage/multiplex incandescent tail lights. voltage: 16 volts Wiring harness length: 27' Limited lifetime warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) If your
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Straight Adapter Cord - RM-152-98146-7

Our Price: $172.72
This complete kit includes everything you need to carry your RV's brake and turn signals to your towed car's tail lights. Diodes prevent electrical feedback. The straight 7-to-6-wire adapter cord is ideal for tow bars with channel guides. amperage: 85 amps Maximum voltage: 24 volts Adapter cord: 6-1/2' long Wire gauge: 16 Wiring harness: 30' long Plastic loom: 3' long Notes: A brake light relay (RM-88400 - sold separately) may be
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster Diode 7-Wire to 4-Wire Flexo-Coil Wiring Kit - RM-15247

Retail: $198.11
Our Price: $141.92
In Stock
Diode kit allows you to use your vehicle's tail lights and wiring system while preventing feedback from your RV. Wires 2-wire and 3-wire systems to operate as a combined lighting systems. Includes 7-wire to 4-wire Flexo-Coil electrical cord. elements Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system Flexo-Coil cord is resitant to water, oil, chemicals, and has silicone-injected plugs to
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Hybrid Adapter Cord - RM-152-1676-7

Our Price: $250.77
This complete kit includes everything you need to carry your RV's brake and turn signals to your towed car's tail lights. Diodes prevent electrical feedback. The hybrid coiled/straight adapter cord is ideal for tow bars with channel guides. warranty Specs: Maximum amperage: 85 amps Maximum voltage: 24 volts Adapter cord: 8' long Wire gauge: 16 Wiring harness: 30' long Notes: A brake light relay (RM-88400 - sold separately) may be
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster
  • 30 Foot Long Harness

Roadmaster Universal Hy-Power Diode Wiring Kit - RM-152

Retail: $155.31
Our Price: $96.31
Diode kit allows you to use your vehicle's tail lights and wiring system while preventing feedback from your RV. Wires 2-wire and 3-wire systems to operate as a combined lighting systems. Connectors and Extension loop sold separately. light relay (RM-88400 - sold separately) may be required if used with supplemental braking system Limited Lifetime Warranty Specs: Max amperage: 85 amps Max voltage: 24 volts Note: For applications that
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Roadmaster

Curt Custom Tail Light Wiring Kit for Towed Vehicles - C96JR

Retail: $140.95
Our Price: $87.02
In Stock
Plug-and-play custom harness gets turn and brake signals on your towed car with no hardwiring or splicing, and no effect on your warranty. The built-in diodes protect your car from electrical feedback. (RM-88400 - sold separately) may be required if used with a flat tow brake system. (See below.) A wiring converter (118158 - sold separately) and 2 additional diodes will be needed to retain separate turn and
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • CURT

Blue Ox 4-Diode Universal Tail Light Wiring Kit for Towed Vehicles - BX8848

Our Price: $70.06
In Stock
This wiring kit carries brake and turn signals from your motorhome to your towed car while you're flat towing. Diodes protect your car from damage from electrical feedback. Diodes Wiring, butt connectors, ring terminal, and spade connectors Made in the USA 1-Year warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Blue Ox

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM39VR

Retail: $102.09
Our Price: $88.07
In Stock
Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe operation. installation hardware Extension loop for connecting towed car to RV is sold separately Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system 90-Day warranty
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • Hopkins

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM27VR

Retail: $102.09
Our Price: $72.23
In Stock
Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe operation. installation hardware Extension loop for connecting towed car to RV is sold separately Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system 90-Day warranty
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • Hopkins

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM77VR

Our Price: $106.17
In Stock
Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe operation. installation hardware Extension loop for connecting towed car to RV is sold separately Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system 90-Day warranty
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • Hopkins

Demco 4-Diode Universal Tail Light Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord - DM9523010-54

Our Price: $212.67
This complete kit includes everything you need to correctly display your RV's brake and turn signals on your vehicle tail lights. Includes coiled 7-way to 6-way adapter cable and 6-way car-side socket. Zip ties 1 Ring terminal Made in the USA Specs: Wiring harness length: 26' Wire gauge: 16 Adapter cord extended length: 7' 1-Year warranty Notes: A brake light relay (RM-88400 - sold separately
  • Tail Light Mount
  • Universal
  • Splices into Vehicle Wiring
  • Diode Kit
  • Demco

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56304

Retail: $94.59
Our Price: $81.57
In Stock
Plug-and-play custom harness gets turn and brake signals on your towed car with no hardwiring or splicing, and no effect on your warranty. The built-in diodes protect your car from electrical feedback. connect to motorhome - sold separately Includes wiring harness, mounting bracket, and installation hardware 90-Day warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • Hopkins

Curt Custom Tail Light Wiring Kit for Towed Vehicles - C58911

Retail: $183.95
Our Price: $113.24
In Stock
Plug-and-play custom harness gets turn and brake signals on your towed car with no hardwiring or splicing, and no effect on your warranty. The built-in diodes protect your car from electrical feedback. connect to motorhome - sold separately Includes wiring harness, mounting bracket, and installation hardware Limited 1-year warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • CURT

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56004

Retail: $102.09
Our Price: $63.93
In Stock
Plug-and-play custom harness gets turn and brake signals on your towed car with no hardwiring or splicing, and no effect on your warranty. The built-in diodes protect your car from electrical feedback. connect to motorhome - sold separately Includes wiring harness, mounting bracket, and installation hardware 90-Day warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • Hopkins

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles - HM56101

Retail: $118.90
Our Price: $74.48
In Stock
Plug-and-play custom harness gets turn and brake signals on your towed car with no hardwiring or splicing, and no effect on your warranty. The built-in diodes protect your car from electrical feedback. connect to motorhome - sold separately Includes wiring harness, mounting bracket, and installation hardware 90-Day warranty Notes: A brake light relay (RM-88400 - sold separately) may be required if used
  • Tail Light Mount
  • Custom
  • Plugs into Vehicle Wiring
  • Wiring Harness
  • Hopkins