what gage power wire should i use when relocating my battery to my trunk.?

 

Chart for guage by length. You can ground close and use short ground, and figure length with appropriate route. There are other site on the net.

http://www.crutchfield.com/S-zqIeLwh...uge_chart.html

Article recommends at least 4 guage.

http://www.lunaticfringe.org/vwfox/m...elocation.html

 

I would highly recommend 0 or 2 guage. Anything smaller isn't much more then a fire risk

 

I have used 4 guage wire for a battery under/behind the front seat of my Integra and have not had a problem in 3 years. Your run could be considerably longer, and may need larger wire, as suggested above.

I grounded to the rear bracket at the front seat, less than 1 foot, and then the run through the firewall for the positive. All 4 guage.

 

I grounded mine underneath the rear seats.