The table and calculator below show the metric wire sizes, with the nearest corresponding AWG gauge, I found in the circuit diagrams for the Mitsubishi 3000GT and Dodge Stealth.
The resistance,
R, of a length of wire is described by the expression:
where
ρ = resistivity of the material composing the wire,
L = length of the wire, and
A = area of the conducting cross section of the wire.
The table below (from the CRC Handbook of Chemistry and Physics, 57th Edition, 1976-1977, CRC Press, p. F167-168) shows values for resistance (of a 10-ga
solid wire at 20ºC) and resistivity for selected common metals. The calculators above are for
stranded copper wire. You can estimate resistance and voltage drop for the metals listed below using the calculators above using the relative difference in resistivity. For example, aluminum has about 1.64 times the resistivity of copper (2.828/1.724). For a 12-ga copper wire 10 feet long with a load of 5 amps, the calculator above indicates a resistance of 0.0162 ohms and voltage drop of 0.0810 volts. For a similar aluminum wire, the resistance would be about 0.02657 ohms (1.64 x 0.0162) and voltage drop would be about 0.1328 (1.64 x 0.081).