Automotive Wire and the Zen of Heat.
Overview:
There are three basic types of information contained in this tech section.
Click here for wire tables and current vs wire size, ( both metric and SAE ) specs from SAE and DIN.

General Information:
What does SAE mean and why is a wire specification important?
What are the specs covering automotive wire and why should you care about them?
Answers here.

Practical information & Selection guide:
•For help with the hands-on fabrication of a reliable system,
•for a fast answer for what size and type of wire to use in a specific location
    with a reasonable safety margin,
•for tips for making a safe and reliable wiring job with a minimum of cost and effort,
•for some options to make it easier to work on when the inevitable changes
    come along, (especially for racers).
More here.


Technical information:
Choices you can make regarding wire size and insulation
and why, what to look for when buying wire, info about wire insulation, stranding,
weight of wire, rated current capacities and more. There is enough
information here for a person with an understanding of Ohm's law to do a
detailed design of an automotive wiring system. Click here for wire tables and
current vs wire size, ( both metric and SAE ) specs from SAE and DIN.