Prepping the materials for this summer. Already have the Blue Sea Fuse Block on the way (12 post, power only), need the battery cables and solenoid next. Blue Sea Amazon.com: Blue Sea Systems 5029 Fuse Block Screw Term Blade: Sports & Outdoors Solenoid http://smile.amazon.com/Cole-Hersee-24059-BP-Insulated-Continuous/dp/B0064MX7US/ref=pd_sim_auto_3?ie=UTF8&refRID=0DVF9HHXFS5QS9D895G6 Fuses for Battery http://smile.amazon.com/dp/B00D8E0SRA/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=VBGP6VAWBVZE&coliid=IE1FWT6BUZMMA&psc=1 Now I just have to determine if I want to use 4 gauge or 1/0 gauge wire. I can order 25ft of either, with only a $10 difference. The longest stretch would be from the aux battery across the engine bay (~5ft) 4 gauge http://smile.amazon.com/dp/B00KRYCY9E/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=VBGP6VAWBVZE&coliid=IAXYLKK66FSC3 1/0 gauge http://smile.amazon.com/dp/B00J0DJPEK/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=VBGP6VAWBVZE&coliid=I2SBDWA0KCJVT6 Will be following this diagram for the batteries How to make a cheap isolated dual-battery setup for $50 - Expedition Portal
I got the fuse box installed with a 4ga wire supplying the power and accessories grounding to the frame. Just need to make up a dual battery box and do the big three as well.