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Old 04-27-2014, 09:30 AM   #1
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Break Away Switch Trouble Shooting

Yesterday while sanding and repainting the fiver pin box, I decided to replace the break away switch cable that was rusted in spots. After checking that the 12 volt key switch was in the off position, I pulled the switch pin and took the cable and pin to Home Depot to get a new cable.

To make a long story short, the pin was out for over 6 hours before I put back in the switch. When I went inside to put on the 12 volt lights, they would not lite. None of the lights worked..

I took out the battery, took it home and checked the voltage. It only had 3 volts left. Put it on the charger and it appears charged.

Found out after the fact that the break away switch is directly wired from the battery to the brakes so when the pin is pulled you have instant brakes.

The questions I have are:

Did I do any serious damage to the brake magnets or anything else in the system having the battery connected for such a long period of time

How do I trouble shoot the system.

Thank you for any help and suggestions in advance.

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Old 04-27-2014, 10:25 AM   #2
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Welcome to iRV2.
First post I see.
First thing to do would be to get underneath ,to the backing plate for the trailer brakes and check the wiring going to the magnets there. If there is any sign of melting of the wiring there.
Personally, I'd pull all the wheels and brake drums to test magnet operation, and examine for heat damage; cracking .
Probably time for a wheel bearing pack anyway.
The magnets can be tested with the drums off by powering them up and seeing if they hold a wrench.

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Old 04-27-2014, 12:25 PM   #3
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There probably are some wires that are melted as well as the breakaway box itself. Other than that, maybe no other damage. No way to tell without looking.
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Old 04-27-2014, 10:24 PM   #4
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accidentally pulled my breakaway for 2 hours. The small wires on the switch burned up all the way up into the bedroom where they spliced into the heavier trailer wiring.
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