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Old 12-26-2012, 01:21 PM
Oldguy48 Oldguy48 is offline
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Since the starter is the one component that will require the most current to operate, I'd use a heavy gauge cable from the engine to the frame. Heavy as in 0 gauge or heavier. Bigger is better, size does matter. The best method is to run a heavy gauge ground from the battery (or in your case, the switch) directly to the engine, but as long as your connections to the frame are clean and tight, you should be OK. A #10 wire is only rated for 30 amps, and the starter could draw several hundred amps when you crank er' over. And you can't have too many grounds in your car's electrical system. Ground the body to the frame in a couple of places, and engine to the frame and use star washers between the terminal and the frame. They'll bite into the metal and provide a better connection. You could always install a heavy cable directly from the engine to your disconnect switch (ground) later if you need to. Let us know what you do, and how it worked out for you.
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