What benifit is there to adding a 2nd battery to my grand wagoneer?
I am told that adding a 2nd battery to my 1988 grand wagoneer will help. I do not understand how the G.W. performance will benefit. Is there an explanation?
Only if you have accessories that use a lot of power like a winch.
A second batt. would help what ? ? "They" said it would help , help what ?
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