Sorry 77Ahmp not 750! Right, finally got this lot finished first impressions are van starts a lot faster, in fact I'm having to learn to let go from starting position quicker before the engine ends up running the starter! Its mental what a difference good cables make. I got most of the parts from Altecautomotive, really helpful and quick. Most people won't include the busbar but I'm leaving room for an inverter at some point. All joints are soldered and crimped with heat shrink. I couldn't find glue type heat shrink so I just used super glue before heating the heat shrink (watch out for super glue burning off, really bad fumes). I put two cables from the busbar to the starter A to spread the load over a combined 70mm squared cable and B so the load goes through the two cables and not as much through the actual busbar plate, rated to 350AMP.