Quote:
Originally Posted by Diesel Freak
OLD SCHOOL :
Disconnect both batteries. Re-connect one positive lead; just touching battery post. If there is a considerable amount of spark ... You have a short. Remove fuses one by one. Checking that battery lead each time. Hope this helps.
P.S. any added power leads disconnect first
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A short would show its ugly head IE.. ( burnt wire , fried electronics.). I would think something is running that is not supposed to be. Optima batteries are not the best choice current wise. For the price they are low on Amp. hours.