I got all the wiring colours n diodes bulbs resistors n stuff but can't work out how the naming of the plugs work , they're mentioned a lot but I can't find a " map" or location list to know where to start , a few are obvious but not all ?

It's explained clear enough in both docs i sent you(diagrams and electricall ibrary) in the introduction but you must use acrobat reader to see them properly and go dirctly to where yoiu need... for example in the "charging and starting" diagram you can see that the WG(white/green) wire from inertia switch(C0123-3/which means pin3) goes to C0605-3 and you can see in the electrical library - connector the connector view with the pinout and wire colours like the pic i attached ... i dont understand what "map" you are after or what you dont understand

Hallelujah SHE RUNS , I'd had a mouse visitor previous owner had left loads of blue roll after wiping dipstick next to fuse box and said mouse was starting to make a nest and the only wire it had eaten was the return fro. The inertia switch!
Thanks for everyone's help
I still have no alarm at moment but I think that's off from the nanocom as no more obvious wires chewed.
I'll check that b4 I ask for help again.
I work on boat engines most of which are old mechanical engines , def no ecu s , coz they don't mix well with water ,, hence I'm a bit slow with this new fangled computer stuff
Thanks again

And thank u sierraferry I did understand after reading those pdfs properly