Thanks to all who replied but the docu I was searching for was one provided by Shipswoofy in response to a previous poster. The 12 Volt Bible. It has the clearest explanations of all for duffers like myself !
I have been trying to download this document with no success,any advice appreciated. Cheers /forums/images/graemlins/frown.gif /forums/images/graemlins/frown.gif