BiggerBaloo Posted October 12, 2008 Share Posted October 12, 2008 Hi all, I have installed a second battery, by joining pos to pos, and neg on new battery to the chassis. It's working as I wanted it to - almost. I have primarily done it so I can put the lights on (work lights) without killing the battery so quick. I have been caught out a couple of times though. Can I just buy one of these? Should I isolate the pos or neg terminal? My thoughts were to put the isolator in between the pos to pos connection. Then the lights etc would kill the primary battery, and the power from the second battery would be used to start the engine? I'm just looking for confirmation. I don't really want to use a split charger for 2 reasons; 1 cost, 2 it means rewiring all auxiliary items direct to the second battery (which will be a long job, and I'm not very good with electrics). Cheers Martin Quote Link to comment Share on other sites More sharing options...
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