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KATOOM's avatar
KATOOM
Explorer
Aug 14, 2014

Trailer connected to truck creates alternator AC noise

Has anyone ever experienced an issue whereby their alternator creates too much AC noise with your trailer connected to the tow vehicle? That being especially if the trailer batteries are not in perfe...
westend's avatar
westend
Explorer
Aug 14, 2014
What is AC noise?
EDIT: you described what your issue is while I typed. There should be no RFI or EMI issues between your RV 12V system and the truck's alternator. The power circuit from the truck to the trailer is terminated through the truck's battery which is a big filter. You may get some spurious RFI into radio frequencies but nothing that would cause your senders to go wonky.
It sounds like your RV's battery is bad and the loss of current may be your major issue.

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