Hayes Genesis Trailer Brake Controller Flashing OC on Display Screen in 2002 Ford Explorer

Question:

I have a 2002 ford f-350 with tow package, I uses the proper pig tail connector but the unit Hayes Genesis 81709 is flashing OC..... What gives?

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Expert Reply:

I looked into the operating manual for the Hayes Genesis Trailer Brake Controller # HA81790 and it looks like when "OC" is flashing on the display, it indicates that either there is no trailer connection detected or the trailer has electric over hydraulic brakes, with which the Genesis is not compatible.

If your trailer does not have electric over hydraulic brakes, check to make sure all the connections running back to your trailer are secure and correct. The other possibility is that the blue wire, which has the trailer brake function, from the brake controller is not connected to the correct wire in your Ford Explorer. Most likely the wire in your Ford Explorer will also be blue, but you can use a circuit tester like # 40376 to confirm its function.

If your trailer does in fact have electric over hydraulic brakes, I recommend using the Tekonsha Prodigy P2 Trailer Brake Controller # 90885. This is a great proportional brake controller with a digital LED display and is compatible with both electric and electric over hydraulic brakes.

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Christopher R

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