Battery positive wires

[firebirdzig]

I was looking for some different options/ advice on where to hook up all of my battery positive wires (fans, compressor for air bags, door locks ect). I was going to run a battery cable from the starter to a painless junction box with 8 terminals for battery positive wires to u Del the dash. I don’t think I’m going to be able to get a second 1/0 size wire on the starter. Can I run a smaller wire? What are some other options y’all have done on your cars? Thanks

[eldogg]

I run 2ga for all of my builds. (+) & (-) to the front of the car. I also use 2ga for my charge cable. I've also started running an 8ga pair front to rear for my sensitive electronics. (i.e. ECM, TCM,etc)

[firebirdzig]

Awesome! Thanks

[vette427-sbc]

Is your battery in the trunk or under the hood?

[GoodysGotaCuda]

2ga has proven to be too small for my application, new Hemi with the battery in the trunk. I get a good 1.2v drop while cranking at the starter through the B+ cable.

I'd go bigger...I only have a single B+ wire on my starter, I have a firewall pass through that feeds the rest of the car.

[firebirdzig]

My battery is under the hood. I ended up running from the battery to a post next to the battery. From there I ran a wire to the starter and another 0/1 wire to a post inside the car to run my constants.