Trailer/winch batteries

[sgriffing]

I just picked up a Napa/Echlin ST-85 relay. 12V/80 Amps continous duty. What gage wire do I need to run to keep my trailer batteries charged? I am running a 12K lb winch wth Deep cycle batteries.

http://www.swampfoxcustoms.com/hot_shot.htm

 

[JWhitcomb]

Bigger the better within reason. I would look into how 4 will work in the situation.