Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights
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2006 Toyota Sequoia
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2006 Toyota Sequoia
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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.
Features:
Specs:
Notes:
A variable voltage tail light (also known as multiplex) uses the same wire for both the brake light and the tail light, sending a 12-volt signal to the brake light and a 9-volt signal to the tail light. This works fine when you're driving, but when you are flat towing, the RV will send a 12-volt signal to both the brake light and tail light, making them the same level of brightness and impossible to distinguish from each other. The drivers behind you won't be able to tell the difference between your tail lights and your brake lights, which is a huge safety issue.
These smart diodes solve that problem by simply converting the signal from the RV to the lower voltage needed for your car's tail lights. They install permanently, but don't worry; everything will work as normal when you're not flat towing.
This kit is designed to work with LED lights only, so if you have incandescent variable voltage lights, you'll need kit RO94FR (sold separately) instead.
If the engine is off and your car's brake lights illuminate when you press the brake pedal, you need to install a brake light relay (RM-88400 - sold separately) with this kit. Without a relay, your car's brake signal will override the turn signal sent by the RV when you are slowing down to make a turn, creating a potentially dangerous situation. Other drivers will see that you're slowing down, but not that you're making a turn. With a brake light relay, you can signal both and travel safely.
A combined lighting system, or 2-wire system, uses the same light bulb to signal both braking and turning. (In other words, the car signals a turn by flashing the brake light.)
A separate lighting system, or 3-wire system, has the brake signal and the turn signal light up independently of each other. Typically, the turn signal is amber.
If your motorhome has a separate lighting system, add a tail light wiring converter (RM-732 - sold separately) to keep your setup functioning properly.
To complete your flat tow setup, you will need either a 4-way or 6-way round electrical connector on the front of your vehicle and a power cable to plug into the RV. Pick up a Roadmaster kit (RM-164-7 or RM-146-7 - sold separately) if you're still missing these important components.
Alternate Instructions
Customer Satisfaction Score:
93% were satisfied with this product
7% of customers were not satisfied
Ratings & Reviews
Jenny N.
9/20/2023
I definitely will have our Customer Service team reach out to you.
Ray B.
2/21/2025
Still operating as installed
Jim B.
9/4/2023
No problems after one year. Would recommend for Jeep owners with factory LEDs.
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Joseph
5/11/2025
Everything was going great until the passenger side brake light wire ped down onto the tail pipe and melted through, shorting the light to ground and failed to operate. Eventually, the 20 amp fuse for the brake lights in the Jeep Cherokee Trailhawk blew and took out both brake lights. It took a while to figure out this problem and I wont bore you with the troubleshooting details. Just remember when installing the wiring, make sure the slack is well tied using tie wraps or similar keeping the wires from getting into trouble.