Here is what I found today. There is a Bussmann fuse/relay box located in the shore power compartment. This relay box sends the signals to the left/right turn and the marker lights. It also has back up lights and ignition relays.
Here is how it works. There is a small wire running from the light switch and the turn indicators to the shore power compartment. This wire has the voltage but very little current on it. This small wire trips a relay in the Bussmann and sends 12v down a 12 gauge wire (not sure of the size) to the 7 pin connector. This is done so that the manufacture doesn't have to run several 8 or 10 gauge wires from the front of the cab to the connector on the rear of the coach.
Here is the problem. The trailer brake pin on the 7 pin connector is a red with a white strip wire. It is a Chrysler part. This wire goes into the harness but when I ohm it out a the shore power compartment, it is tied directly to the right turn signal. This means that if I had hooked up my trailer with electric brakes, every time I turn on my right blinker, the trailer brakes would lock up and pulse on and off. Not good.
Would Tiffin allow this to be wired this way? I plan on calling tomorrow to find out what they actually did to the wiring. It would seem to me that there is a junction box under the bed where they joined these wires together. But why? Has anyone had experience with this? Please let me know.
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Bill & Mary USN 69-73 ASW Technician, MBA.
2006 Tiffin Allegro Bus QDP 1060 watts solar
2012 Jeep Grand Cherokee '16 Polaris Razor 4
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