Quote:
Originally Posted by roadrider57
I am running the F53 chassis on this 2000 Adventurer. I have gone through all the schematics that Winnebago has, the issue is that the chassis wiring is done at Ford before Winnebago takes possession, so I need the schematics for the F53 Chassis. The prewired plug that i located under the dash is connected properly to the chassis, but it seems that the way the wiring was done in 1999 and 2000 no one was thinking of trailer brake controllers with the slider or override button on the controller. Touching that button sends 12 volts straight to chassis negative because it would appear that the brake pedal either uses a relay somewhere in the chassis or incorporates a internal switch when the pedal is depressed. When the pedal is depressed the path to ground is opened and switched over to 12 volts, and vice versa, so by touching the slider without depressing the pedal it sends 12 volts out of the controller as it should but is a dead short. I need a set of F53 chassis schematics to study to determine why ford needs to ground that wire when the brake pedal is in the up position.  |
The dead short that occurs when you push the slider is not because of a defect in the factory wiring. It's because the #10 blue wire that provides power for the brakes wasn't extended to and terminated at the trailer socket at the rear of the coach.
Ford runs the wiring harness along the left frame rail to the rear of the original Ford supplied frame. The body manufacturers are supposed to extend all the wires to the socket. For some reason Winnebago chose not to extend the blue #10 wire. The unterminated wire is probably touching against the frame rail or other ground.
Follow the wire loom from the trailer socket back to the original left frame rail. Open the loom at this point and you'll find all the wires that were supposed to go to the socket. In many cases the unterminated wires are folded back and taped together. In other cases they were just left inside the loom. The #10 blue wire for the brakes should be labeled "trailer brakes".
We went through this scenario on our 2001 Adventurer on the F53 chassis. When I finally figured it out I asked the Winnebago factory rep why they only extended some of the wires. His response was that if the coach was ordered by a customer who specified they would be towing all the wires would be connected. If the coach was ordered by a dealer for stock without mentioning the future customer would be towing only the brake and tail light wires would be extended and terminated at the socket.
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