Here's another submission from Mike Drew. This is from a company called Polevolt in the UK. This serves as a great reference for electrical bits and pieces uses in automotive applications. Thanks mike.
http://www.gt40s.com/images/howto/LynnMiner/Reference/Polevolt.pdf
http://www.gt40s.com/images/howto/LynnMiner/Reference/Polevolt.pdf