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I am not familiar with your motor but I always thought that the voltage regulator was used with a generator and alternators have an integral regulator. If you have unabated current from your charging system you will ultimately cook your battery. Do square away your charging system. Those dc wires can melt/fry in a second. The Blue Sea dual battery plus charging system has a battery isolation feature. Electronics should be independent of any potential spiking or surging or you can ruin them.