Battery Relocation Help

[SuperTuner12010]

http://homemadeturbo.com/tech_projec...ion/index.html
I have 1 question about this.What is the purpose of the circuit breaker?Does it go on nthe positice cable or the negative?Thanks

[cp[mike]]

its a high-current battery switch, to easily "disconnect" the battery without having to undo lines. its a requirement in some racing, autoX iirc. and it goes on the positive cable.

[SuperTuner12010]

What size wire are you guys using to run to the front?I was thinking of using some 4 gauge but Im not sure, If the 4 ga will work fine then would this be a reasonable deal?
-http://cgi.ebay.com/2000-2100-WATT-A...QQcmdZViewItem
Its an amplifier wiring kit with 17 Ft or 4ga wire for the positive and 3ft of 4ga for the ground.It also comes with a pair of tweeters?Could I use this?Thanks

[SuperTuner12010]

Anyone?

[Cam]

I'm using 4 or 8 can't remember which. Been working for years.