Will Supplemental Braking System and Tow Bar Wiring from RV Overload Brake Lights on Toyota Tacoma

Question

Question:

I am using a brake buddy braking system witch puts the brake lights on when the brakes are applied.is this ok when both the towing vehicle and the towed vehicle supply power to the brake lights at the same time? I have a 2014 Toyota Tacoma.

asked by: Walter G

0

Expert Reply:

Both a brake light signal from the motor home and the brake signal from the vehicle are 12 volt systems. If both are supplying power at the same time to the same circuit it would not overload it because it would not double up the power to 24 volts.

You may need a brake light relay # RM-88400 to keep the Tacoma brake signal from overriding the turn signal sent by your RV. The relay is needed on towed cars with combined lighting if you are using a supplemental braking system. Combined lighting means the vehicle has turn signals and brake lights on the same circuit.

To determine if a brake light relay is needed to properly wire your vehicle to be towed, answer the following questions.

Are you using a supplemental braking system that depresses the brake pedal in your towed car?
No - You do not need a brake light relay.
Yes - You may need a brake light relay. Continue on to the next question.

Do the brake lights on your towed car illuminate while the engine is off?
No - You do not need a brake light relay.
Yes - You may need a brake light relay. Continue on to the next question.

Do your towed car's brake lights act as both the brake signals and the turn signals?
No - You may need a brake light relay. Continue on to the next question.
Yes - Your towed car has a combined lighting system. You will need a brake light relay to ensure proper activation of its signal lights.

Does your towed car have separate brake lights and turn signals?
No - Your towed car has a combined lighting system. You will need a brake light relay.
Yes - Your towed car has a separate lighting system. You may need a brake light relay. Continue on to the next question.

Are you wiring your vehicle with a six-diode kit or a TowDaddy custom wiring harness?
No - You will need a brake light relay to ensure proper activation of your towed car's signal lights.
Yes - You do not need a brake light relay.

expert reply by: Michael H

0

Answer 1

The wiring kit I recommend that connects your RV to your 2015 Toyota Tacoma is the Roadmaster Hy-Power Diode Wiring Kit #RM-154, which is our most popular option for your vehicle and will prevent feedback from your RV.

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Answer 2

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Answer 3

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Answer 4

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Answer 5

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Answer 6

You're welcome! No, you won't have it. That's a newer addition to motorhomes. You'll need to install the air tank that comes with the Demco Air Force One Supplemental Braking System for Motorhomes with Air Brakes item #SM99243.

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Answer 7

So the DUO does not need your vacuum assist brakes to have vacuum to push the brakes hard enough to stop the vehicle. The system basically is strong enough to be able to press the pedal hard enough without the vacuum assist.

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Answer 8

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Answer 9

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Answer 10

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Answer 11

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Answer 12

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Will Supplemental Braking System and Tow Bar Wiring from RV Overload Brake Lights on Toyota Tacoma

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