I have 2- 31 AGM batteries for trolling motor, Motorguide 70# thrust I believe, the plug has the jumper for 24 volt. Batteries have been running down fast, they charge fine, checked with volt meter and they checked ok, charged them up and checked again after work the next day, everything ok, even took them to battery outfitters today and they checked out ok. Got home and checked plug and the plastic insulator inside was broke and the wires pulled out, I assume that is causing the excessive draw from my batteries, correct?? Thanks