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Brake Light Relay Recommendation for Vehicle Where Braking System Pushes Brake Pedal

Question:

I am getting a new Jeep TL model and I plan to flat tow it. It will have LED tail lights. I have read quite a bit about how the diodes do not work when you apply breaks and turn signal at the same time - if the vehicle breaks are applied by a supplemental brake system. Basically a conflict between 12 volts from the RV at same time from from the Jeep. Why couldnt a kit, using a 9 pole double pole - double throw switch, be used to choose between Jeep supplied power and RV supplied power? It seems that this would totally isolate the power supplies.

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Expert Reply:

We have just what you need for you situation. Roadmaster makes a brake light relay part # RM-88400 which allows your supplemental braking system to apply the brakes without overriding the tow bar turn signals if the blinkers were on. We've also installed it on a similar Jeep Wrangler JK which I attached an install video for to this page.

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Jameson C

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