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What Would Allow Homemade 7-Way Trailer Connector to Be Detected by Integrated Brake Controller

Question:

I have built a trailer in a box in order to test the above brake system. The problem is the ITBM system does not see my tester. I have wired the 7 plug as follows: Blue brake control wire to a 1 ohm 200 watt resistor. tested and equal to my 4 magnets in parallel White ground to all needed grounds. Tail, clearance, Right turn/stop, and Left turn/stop from respective terminals to 3 lights 1/2 watt incandescent bulbs. I do not have the Back-up wire connected or the Plus + 12 VDC connected. I have a 20 Amp current meter on the Blue wire in series with the 1 ohm 200 watt resistor. I have a volt meter across the Blue wire and ground. When plugged in the lights work however the Brake Controller is not activated and I get a check trailer wiring warning on the dash. I believe that the ITBM is sending a signal to check for proper connection. Every circuit is connected to a load with return to ground except the 12 VDC and the Back-up light. I would have thought that this signal would be though the Blue brake control wire. Any advice on how to make this Intergal Brake Controller recognize my tester. Bob Alexander

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Expert Reply:

To get the tester you made to be recognized by your 2015 Ram with an integrated controller you will need to install a brake magnet on the circuit. The controller you have is looking for the specific load that a brake magnet would put on the circuit to sense a trailer connection.

The part # AKBRKR-M10 would work well for this.

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Jameson C

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