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Old 02-16-2015, 04:07 PM   #1
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Safety break-away switch

I noticed that the safety break away switch on my 28.5 5er has quit working. Anyone know if the 12v for the switch is from the house batteries or is there a separate 12v battery? If so, know where the portable battery is located at.

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Old 02-16-2015, 04:32 PM   #2
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Should be from the house battery. I don't think these switches are very robust and the contacts may have corroded. Using a VOM, I would verify you are getting 12V to the switch then check for 12V from the switch to brakes. If this part of the circuit is good then follow the wire to the brakes looking for a short or break in the wire checking for 12V any time there is a splice. If you get all the way to the brake and still have 12V the problem may be in the brakes themselves.
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Old 02-16-2015, 05:05 PM   #3
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I was doing some research on etrailers.com and their switches had portable batteries. Called and talked to one of their reps and they thought that all switches had a portable battery set uo...Why I was asking.
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Old 02-16-2015, 05:13 PM   #4
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Utility trailers w/o a on-board battery have a small 12v battery similar to a emergency light battery in a building. All rv's I have ever owned used the trailers 12v battery.

edit: if you have the small battery it will be mounted in a small box on the trailer tongue. Replacement batteries can be purchased in big box stores in the area that sells emergency lighting.
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Old 02-16-2015, 05:24 PM   #5
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Yep...what etrailers was saying. Guess I will be out this weekend looking for it or lack of one.
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Old 02-16-2015, 05:38 PM   #6
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Hey, I read your post about changing the brake assemblies. I bet you find a wire missing after doing some troubleshooting. Make sure you have 12v thru the switch when it is closed.
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Old 02-16-2015, 06:14 PM   #7
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I took a test drive after finishing the work. I do have brakes, but not much. Why I decided to try the switch, just to get a full 12 volts and check them out from there.
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Old 02-17-2015, 12:34 PM   #8
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Received a reply from Jayco customer service. The break away switch receives 12V form the house batteries and/or the charging wire from the TV. They sent me a wiring schematic...should be easier to troubleshoot now.

I was disconnected from the TV when I first tried the break away switch. Will connect to TV and try again...just to see if 12V from TV is getting there.
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Old 02-17-2015, 01:46 PM   #9
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Just remember the purpose of the breakaway switch does not come into play until the camper is NOT connected to the tow vehicle.
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Old 02-17-2015, 02:00 PM   #10
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Quote:
Originally Posted by norty1 View Post
Just remember the purpose of the breakaway switch does not come into play until the camper is NOT connected to the tow vehicle.
According to Jayco and the schematic...can get battery from the Chargeline or the house batteries. It does work connected to the TV...several years ago was pulling out of a site, making a right hand turn and break away cable got tangled in something in the bed of the truck. The plastic piece pulled out of the switch and wheels locked up...
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