Bought 10ft of 1/0 Knukonceptz Kolossus Flex cable. Still had 3-4ft left when I was done. Used a Knukonceptz water proof inline fuse holder with 300amp fuse.
Before Big 3, with Cadence ZRS-C65 amp at 600rms, the idle volts (13.75) would drop to 13.2x. After Big 3 idle volts were up to 13.99v, and only dropped to 13.7x.
Seems to be about the limit though, 800rms drops down to about 13.2x. Still have the factory 110amp alt and 550cca battery, both were just tested by the dealer to be fine. Will need to add another battery, and if possible a high output alt if you plan to run anymore.
The battery to ground and alt to battery is easy. There is a threaded hole right next to it, next to the headlight hold down bolt. It takes a 7mm bolt.
The stock alt to ground is a fine place to add the new one. Just make sure you bend the terminal a bit, and angle it right so you can fit the plastic engine cover back on.
Behind the passanger side headlight is another threaded hole. 7mm was just slightly too big, so I think its a 6mm. Not 100% sure cause I just grabbed a random bolt and it worked. Make sure you bend the wire right, and zip tie it to something so it doesnt come close to the belt, and so its not near anything hot.
Alt + to battery is pretty easy too. You can run it along right under the stock intake. I zip tied the wire and fuse holder under it and ran it to the battery. This example has the fuse a little further away from the battery then most would want, but its not going to really matter. I put it there cause it was easier to mount to the stock intake and hide away.
More pics.
