I'm an electrician and a good rule of thumb is bigger is better. On your vehicle a good 14 gauge is all you'll really need for just about anything. Most THHW or THHN wire is gas and oil resistant, perfect for automotive use. The insulation is usually thicker than automotive grade wire. The only downside is that it is a litter stiffer and likes to curly cue. Some tape or tie wraps should take care of that though.

Wire sizing chart:
14 gauge: 15 amps
12: 20 amps
10: 30 amps
8: 45 amps
6: 55 amps


1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
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