Solar Wire Size..??? Fuses on panels...??

Well how about that. You learn somethimng new every day. I didn't think the resistance in a 18" piece of #2 wire would add up to anything on a two battery system. Although extremely small, it is still there.

I'll be moving the negative wire to the far battery as stated here.

http://www.smartgauge.co.uk/batt_con.htmlhttp://www.smartgauge.co.uk/batt_con.html

Thanks for pointing it out.