I am going to upgrade the big "3" on my car and i was wondering what size wire should i

  • Thread starter Thread starter jacob d
  • Start date Start date
Use the biggest gauge wire that you can afford.

Generally I would recommend that you use 1/0 gauge. But, 2 gauge would work if you can;t afford the bigger stuff.
 
Here is a guide that will calculate what size alternator, power wires and Big 3 wire sizes you need http://www.box.net/shared/uchv4dbk88

You will need Microsoft Excel.
 
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