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Ok, now on to the wiring!
I started with the new battery ground and ground fuse. I used 2 gauge wire and the heavy-duty lugs from custombatterycables.com for the engine ground. I used my buddies impact crimper to crimp the cables to the lugs. I found out that the shorter the cable run, the more important it was that the lugs were in the right orientation (spin) on the cable. Many of the lugs ended up being in a 90 degree orientation to achieve the right position.
I chose the upper-right boss on the engine block to make my ground connection as this kept it away from the exhaust manifold.
The next step was to wire up the positive leads from the new battery to the hellroaring. This was particularly difficult due to the 1/0 gauge wire I chose. The close-quarter bends to make the short distance to the helroaring took a bit of time and wire wrangling. Componding this was the wire lug size and the close position of the hellroaring posts to each other. I had to grind down the lugs to make sure they did not contact each other when the are mounted on the hellroaring. This is not ideal, but I will monitor and make sure there is no touching issues in the future.
I then ran the cable lead from the hellroaring to the positive buss of the existing system. I chose to wire the hellroaring output directly to the positive post of the main battery. I know many people have run this lead to the positive terminal of the starter or alternator, but for me the main battery was the most obvious.
I also temporarily ran the cable on top of the radiator core, but I would like to route it under the core support where I ran the Slee headlight harness.
Picture 1 is the hellroaring wired
Picture 2 is the front view of the two batteries installed and wired
Picture 3 is the side-view of the two batteries installed and wired
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