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Gary Answers Your Questions
Watch the archived webcast of Oct. 17. . . where Gary answers questions from RVtravel.com readers. 45 minutes. Click here to watch. Broadband connection recommended.
Dear RV Doctor,
My roof air conditioner has a solar charger that
connects to the rear battery. The connection (one wire only) is on the
negative post of the battery. Is this correct? It is a new battery and
it went dead. --Mario Valencia
Dear Mario,
The simplest of DC circuits mandates that a minimum of two wires
be present; the charge line (positive 12-volts) and a return path to
ground. It appears there is a hot wire missing from the solar panel
mounted on the roof A/C. The solar panel can still generate a charge,
but without that wire to the positive side of the battery, an open
circuit exists and no charging is possible. Remove the solar panel and
see if the missing wire either broke away from the panel or was never
routed to the battery. It may be possible to rewire the panel and run a
new charge line to the positive post of the battery, but a close
inspection must be made first. Plus the panel itself should be tested
to be sure it is still functioning properly.
New:Sign up to receive Gary's free email newsletter. Great tech tips twice a month. Your privacy assured. Never any spam. Just the informative newsletter. Gary Bunzer, The RV Doctor,
is a well known RV author and the host of RV Roadtrips, the DIY Network
cable television show. He is one of the RV industry's most sought after
speakers and the host of the popular DVD titled Do It Yourself RV Care.
How to care for the canvas on pop up trailers