I did kind of overkill on everything.... but that's the way I roll
0-gauge red/power all the way front to back.... 0 gauge black/ground at back with the battery... and 0-gauge black/ground to the alternator and starter from a good ground up front. I also took the opportunity to install 2 distribution blocks up front that have 0-gauge in and 2/4/8gauge out for all the various other power and ground sources that were routed to the battery previously. From the distribution block for power/red I have 2-gauge going to the alterator and starter because it's a short run and that's big enough.
I used all car audio connectors, battery terminals, power/ground wire, distribution blocks, etc.
I also used a 200amp fuse for the power wire that runs to the front as well.
I have a new mr2 100-amp alternator and an optima battery in the back with a digital stiffening cap (for the stereo) and with the car running I get between 14.8-15.2V which is great, so I'm getting a very healthy voltage from the alternator even though the battery has been relocated all the way to the back.
For the life of me I cant remember the name of the part but do any of you remember that part that they were selling in all the magazines awhile back to run all your grounds to? I remember they tested it a couple years ago in SCC and it actually added a couple HP. Does anyone remember what Im talking about?