OK I found my good meter, it shows 14.3 at the battery and the alt when the hoe is running see pic below
I assume this is the diode behind the alt maybe someone can verify it by the pic below for me,(sorry about the watermark) it shows voltage one way and when I switch the leads from my meter around it then shows 0.0 then after a second or to goes to showing OL.
Also with my machine running I get 14.3 Volts at both of the leads with the red arrows in the pic below
Checking the voltage at the logic module, ignition switch, relay etc. will show you what's wrong. BUT, ONLY if you're reading the voltage that each component is seeing, by measuring it's hot and ground.
So the logic module is the little flat box about the size of a flask behind the fuze/relay block in the consol, is that correct? so I guess that is my next move is to check that, can I ask you is there anything special I need to do to check it, I assume I will need to know what wires go to what component coming out of it, sorry for all the questions..
Was so much easier when it use to just be a timing light and a set of points lol......