Hi there,
I've recently finished a bunch of electrical projects and have some leftover Blue Sea bits, brand new and never used. Perhaps you need some of these?
Blue Sea 9003E - e-Series Battery Switch Single Circuit ON/OFF - $60 each (have 2)
good for 3/8"/M10 ring terminals, 4/0 AWG wire, 1200A cranking/600A intermittent/300A continuous, 48V DC maximum
Blue Sea 4012 - CableCap - Red 0.50 Stud - $5 each (have 2)
Blue Sea 2104 - PowerBar 600A BusBar - Four 3/8"-16 Studs - $120 each (have 3)