Trying to get things ready in my head before dropping the dime on a Si...

I've already determined from posts here that I should run an independant set of wires from the HB Si to the battery (and run the wires on the opposite side of the boat from the TM battery wires)...

I have an 1860 Landau with batteries in the back and the Si will be on the bow....so about 20-22 ft length of wire to be run...

What size and type of wire should I use...??