By law, a towed vehicle's turn signals, running lights and brake lights must mimic the motorhome's.
There are multiple ways to accomplish that:
1. A system of diodes (either traditional diodes or Smart Diodes);
2. Installing new taillights in the towed vehicle using either an incandescent or LED bulb and socket kit;
3. Installing add-on LED light strips; or
4. Magnetic tow lights
Each method has its advantages. Whichever one you choose, ROADMASTER has a kit with all of the necessary components, and step-by-step instructions.
Universal Wiring Kit
This kit uses a system of diodes to connect your towed vehicle's turn signals, running lights and brake signals to your motorhome's. Diodes prevent electrical feedback and protect both vehicles' electrical systems. The kit comes complete with:
• four Hy-Power diodes
• a 27-foot length of four-wire electrical cord with 4-way flat connectors
• three feet of split wire loom
• a six-foot power cord with 4-way flat connectors (connects electricity between the two vehicles)
• a ring terminal, cable ties and wire connector
154 Universal Wiring Kit with four Hy-Power Diodes
152 Economy Wiring Kit — does not include molded four-way plugs or six-foot cord
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Smart Diode Wiring Kit 153789
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Smart Diode Towed Vehicle Wiring Kits
Diodes are often used to prevent the backflow of current to the electrical system of the towed vehicle or motorhome. But many vehicles now use systems with
electrical signals sent down a single wire (brake and taillights, for example).
This is called variable voltage.
If an ordinary diode is used in these applications, then the bulb will illuminate as though the vehicle is braking. That is, you can’t tell the difference between the brake lights and running lights.
Smart Diodes correctly modulate the voltage to activate only the intended circuit. The result is vehicle lighting that looks and functions as intended. Whereas four regular diodes are required per vehicle,
Smart Diodes only require two.
Although Smart Diodes are required to wire vehicles with variable voltage, they can also be used to wire traditional vehicles. Visit Fitmaster to determine if your vehicle requires Smart Diodes.
153782 For vehicles with incandescent lighting
153789 For vehicles with LED lighting
152789 For Jeeps with proximity sensor systems
'All-in-one' Towed Vehicle Wiring Kits
These kits are for the most popular towing combinations. They include everything in the 154 above, plus a Flexo-Coil power cord, electrical socket and mounting bracket.
15247 For 4-to-7 wire towing combos
15267 For 6-to-7 wire towing combos
Bulb and Socket Wiring Kits
A major advantage of a bulb and socket kit is that it bypasses the towed vehicle's electrical system, which eliminates the concern of interacting with any vehicle electronics. Wiring is routed underneath the car, to a socket mounted to the grille or fascia. Since the towed vehicle' electrical system is bypassed, this kit eliminates the concern of voiding the vehicle manufacturer's warranty. We offer two different bulb and socket kits to meet your needs.
Note: As with all kits of this type, the towed vehicle's taillights must have room for an extra socket and bulb inside the lens housing.
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LED Bulb and Socket Kit 152-LED
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LED Bulb and Socket Kit
LEDs have significant safety and appearance advantages over incandescent bulbs - they're brighter, they activate faster and they last longer. Another advantage is that LEDs do not generate significant heat, so there's no danger of melting the taillight lens.
This complete kit contains a 27-foot wiring harness, butt connectors, two LED bulbs, two sockets, zip ties, ring terminals, split loom and installation
instructions.
152-LED LED Bulb and Socket Kit
152-2 LED Bulbs and Sockets only — 2 pack
152-50 LED Bulbs only — 2 pack
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Incandescent Bulb and Socket Kit 155
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Incandescent Bulb and
Socket Kit
This bulb and socket kit is an economical option that contains a 27-foot wiring harness with molded plug, a 4-wire power cord with molded plugs, butt connectors, two bulbs, two sockets, zip ties, and installation instructions.
155 Incandescent Bulb and Socket Kit
155-2 One pair of bulbs and sockets
155-10 10-pack of bulbs and sockets only (bulk-packed)
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Auxiliary Lighting Kit 157 in use
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Auxiliary Lighting Kit
Introducing yet another innovative product designed to make towing easier and safer. Although this lighting kit can be used on any towed vehicle, it was designed as a wiring solution for vehicles
where traditional wiring diodes will not work. Kit includes a separate wiring harness that routes from the front to the rear of the vehicle.
A built-in “Y” allows the harness to reach both sides of the vehicle. Adhesive backing (the same used at the OEM level to affix badges and logos), allows the installer to place the light strips
at a convenient location.
The kit is an effective way to add the necessary lighting when towing. LED strips can be removed if necessary. The kit includes flip latch wiring connectors for easy installation.
• Color coded wiring for easy plug-and-play installation
• Pre-stripped and tinned wire ends
• 3M removable adhesive tape pre-installed on LED strips
• LED strip protected from moisture and dust with IP68 rating
• Produces 152 lumens at 12.3 volts
• Displays turn signals, running and braking lights
157 Auxiliary Lighting Kit
Magnetic Tow Lights Kit
The quick and easy way to connect your towed vehicle's electrical system to your motorhome's. Self-contained, and requires no splicing into the towed vehicle's electrical system.
• Fits all vehicles
• Heavy-duty vinyl casing for maximum wire protection
• Includes plugs, sockets, and wire harness
2120 Standard Magnetic Tow Lights (inc. 4-wire flat plugs and harness)
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