dwk
Newbie RV’er
Posts: 16
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Post by dwk on Nov 15, 2022 16:47:31 GMT -5
After our last trip I received many times that the trailer brakes were disconnected on my truck. It happened all the time when it was wet and moist outside. At times I was able to squeeze my manual trailer brakes and it engaged again but there were times when it stayed disconnected for a few miles.
There must be a short somewhere in the cabling on the Sonic 190VRB or water getting into the connectors.
Anyone seen this before?
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Post by earlelaine on Nov 15, 2022 17:32:38 GMT -5
There is a lubicant made to lab electrical connections, I would try that.
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marjim
Weekender RV’er
Retired EE, Vietnam Vet, God, Faith, Family & Flag. St. Louis area
Posts: 99
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Post by marjim on Nov 15, 2022 19:48:24 GMT -5
The lube is typically non-conducting silicone or often called battery grease.
The non-conductive gel never hardens. Its used to fill the air-gap between connectors and/wires. Sometimes when connecting and disconnecting, especially hot circuits, an arc can occur. The arc causes carbon buildup. If there is no air, then no spark or carbon buildup.
starter relays on old machines were famous for arcing and sometimes the carbon would be so thick the relay would chatter..meaning it wanted to connect but the carbon stopped it from conducting.
Before you add any silicone (GE makes a great toothpaste size tube) make sure to clean your contacts with wire and then spray WD40 to remove water and prevent corrosion. Check the connection and if all is OK, then add the grease. It will be the last time you'll need to check em.
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marjim
Weekender RV’er
Retired EE, Vietnam Vet, God, Faith, Family & Flag. St. Louis area
Posts: 99
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Post by marjim on Nov 15, 2022 19:51:52 GMT -5
 Sometimes called dielectric grease. you can get the CRC stuff from Advance Auto for $15. |
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dwk
Newbie RV’er
Posts: 16
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Post by dwk on Nov 16, 2022 7:50:00 GMT -5
I was reading not to use the paste as that also retains dirt/dust particles if not connected. In stead use the spray version instead and this step was already planned.
Am just hoping that the wires aren't shorting somewhere under the carriage.
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