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Old 12-23-2018, 10:36 AM   #1
Tinman97423
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Trailer brakes hot/ground

Cougar 2016 303RLS
Emergency trailer break switch that has the pull cable that engages the breaks in case of a disconnect.
Is that a positive or negative switch (Hot or Ground)?

I am at a RV park with full hookups and do not want to disconnect the RV. Using that switch one wheel at a time is a good way to check and adjust breaks.
I am trying to check break adjustment at each wheel by jacking up one wheel at a time, then pulling the plug from the switch. I am sure that the switch is a positive (Hot) that sends 12 volt to each break to lock them up. I have no power (12 volt) going to the switch. There has to be a fuse somewhere for the breaks. The main panel inside the RV has no blown or break label at any of the fuses in the panel. There are 2 other fuse panels in the pass thru storage with one for the leveling jacks and the other for (no labels) ??
I have permission from the RV park to do this because my breaks are not working.
I think they need a good adjustment first before doing anything else. All four wheels show NO signs of grease. ANY IDEAS??
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Old 12-23-2018, 11:03 AM   #2
Wing-in-it
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did you check up in the pin box for an in-line fuse?
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Old 12-23-2018, 11:03 AM   #3
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My breakaway switch comes right from the battery with no fuses. I would follow the wires back and check all the connections.
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Old 12-23-2018, 11:08 AM   #4
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I would think the switch is wired directly to the battery. If you have no power when the pin is pulled from the switch, disconnect he battery and check for continuity between the two wires at the switch. If you have continuity, the problem is between there and the brakes, or the brakes themselves. You could also check if you have continuity and each brake.

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Old 12-23-2018, 12:17 PM   #5
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One side of the switch will be "HOT" all the time. The other will be HOT when you pull the pin. If there isn't any power on either side then the power to the switch has been lost, most likely at the junction box of the umbilical cord. Often times there are numerous power wires joined in one wire nut.
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Old 12-23-2018, 12:25 PM   #6
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I would think the power comes from the tow vehicle,, another words you need the two vehicle plugged in
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Old 12-23-2018, 12:29 PM   #7
Steveo57
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Quote:
Originally Posted by Local150 View Post
I would think the power comes from the tow vehicle,, another words you need the two vehicle plugged in
It's called a break away switch for a reason. If the trailer breaks free from the tow vehicle then the brakes on the trailer will get applied. The break away pin gets pulled and energizes the trailer brakes using the battery on the trailer.
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Old 12-23-2018, 12:46 PM   #8
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You are. Correct what was I thinking ? Evidently I wasn't
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Old 12-23-2018, 03:01 PM   #9
Tinman97423
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Thanks for the ideas

Just after I posted the question I decided to pull the break away switch and holding it to the sun (plugged pulled) I could the contacts were not closing. The switch was open all the time. I just need a new break away switch and then I can go back to checking my breaks.
THANKS for the ideas and help. Tinman97423 now coming from southern Cal. desert but with complete hookups.......
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