| Admin note: O gauge is larger than 1 gauge Highly recommend 0 gauge since you'll be doing high output with those turbos. You don't want power starvation on the high end right? Your spark will appreciate the added protection. One other thing to remember when you drop the battery in the trunk. Set it up for if/when you decide to take your car to the track. Some tracks require you have a quick shutoff that should be placed immediately after the battery for safety reasons. You don't have to do it, just plan for it as something to keep in mind. Main supply
Starter -> power distribution -> battery From battery create a ground at least 18" away and as central as possible. It can really be anywhere you have solid medal. Use the existing ground from the under hood location as well when you terminate and distribute to your long haul to the trunk. I recommend keeping the OEM ground that runs from the back of the block where the transmission fastens. There are practically endless possibilities to where you can ground on either the engine or transmission. Just account for the protection of wires as heat can be generated anywhere in your engine bay. I have a few photos of how I did mine: Custom 2ga starter cable
 2ga from starter to 0ga GND [before] termination/distribution block
Power distribution and long-haul 0ga to the trunk & battery
0ga main run through firewall, and cockpit running toward the trunk
 4ga run for inside accessories (gauges, alarm, EBC etc), and used separate relays to control electronics that require 12v constant or 12v key in ignition. Notice the GND to the left of the Accumulator
 Distribution blocks for all aftermarket accessories. Location is under passenger seat, and relays located in driver side kick panel for easy access if necessary
 Good luck, and let us know how you decide. Post pics too if possible.
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Oga vs 1ga - 
