Trailer Brake Wiring Sprinter chassis
Class "C" towing a Dolly. 7 pin connector on RV and 7 pin connector on Dolly. For those of you that have Freightliner/Sprinter Chassis-------Do you have a brake controller going to the 7 pin connect...
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Whatever trailer wiring you have will have been installed by Coachmen, so only somebody with a Coachmen Sprinter motorhome will be able to give specific advice. There are 2 possibilities: (1) They used the optional Sprinter trailer harness, or (2) They did their own custom wiring. On mine, Fleetwood did their own custom wiring, relaying all of the connections to the trailer connector (required on Sprinter), and adding a relay logic circuit to convert the 2-lamp stop+turn setup on the Sprinter to a single light setup. They did provide a blue wire to the brake pin on the trailer connector, buried and hidden with no instructions whatsoever.
