Alternator wiring routing and gauge question

[willett]

Hey guys,

I'm in the last steps of having my k20 ready for 4x4'in season. Today's job is to put a shiny new 110A alternator on there (I need it because I have dual batteries, a stereo, and enough lights to illuminate Yankee stadium)

Anyhow, whatever is on there now is a 3 wire setup

The new alt can be 1 or 3 depending in wether or not there is a jumper in place.

My questions:

1. should I bother running 3 wire setup? I have no charging light and do I really need the sensing wire?

2. Will 4 ga wire be sufficient? ( I'm going to run 2/0 from the starting battery to the starter mostly because I have some laying around)

3. Should I run the charge wire from alt down to the starter or just T it and run it to both batteries? ( I will be putting an ignition controlled solenoid between battery 1 and battery 2 but that's for a different day)
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[SCOTI]

Wire gauge required depends on the alt output & the length of 'wire' used....

http://www.powermastermotorsports.com/charge_wires.html

[willett]

thanks, i had one of those charts somewhere but i couldnt find it. 4 gauge will be ample.
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