Where do I test to see if truck is charging the fifth wheel batteries? Can I tell at the battery connections? I know I have a controller, but not sure how that is wired in the system. While driving a ...
Put your volt meter onto the 5er battery, fully charged should be at least 12.6 volts, plug in your 7 way and start the truck engine, take another volt reading at he 5er battery. If it is charging the reading should be at least 13.6 volts. If the reading does not change from your first reading then the truck alternator is not charging. Then the trouble shooting begins. Report back your findings and I am sure you will get help in finding out why?
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