Cariboo4x4
Member
I use an 83 gmc 4x4 for snow plowing. I have homemade plow on front and been using a warn winch to lift and drop my plow. Its been like this for 8 years or so however with the headlights, wipers, and heater on and doing short pushes I start seeing my headlights dimming when winching in. I put a larger amp alternator in today and thinking of adding a second battery in parralel. My 2nd battery is the same as my other battery. They were both in a diesel truck before. I have place to put 2nd battery under hood along with some extra battery cables. Do I need to add any other components? I read somewhere I should add a battery isolator so main battery does not get depleted by 2nd battery. Im on a tight budget and want to do it as simple as possible.