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Old 11-21-2016, 07:46 PM   #11
Capt.Bill11
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City: Sarasota/Ft. Lauderdale
Join Date: Apr 2014
Posts: 5,438
Most likely electrical.

Take a good look at the grounds.

And measure the voltage at the batteries when you are having difficulty starting. You need to see how low the voltage drops under load. Not just what the voltage is as they sit there with no load on them.
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