Does anyone make a new copy of a g40 wiring harness??
or would any1 be intrested in one?
nope, wouldn't be cheap either, new connectors alone would come to a fair bit. Best bet is to re-furbish yours. It's not that hard to re-wrap it if you have a big open space to lay it out, my front room floor a few years ago:
(http://derby.polog40.co.uk/photos/100_2590.jpg)
It's not hard but it is time consuming and boring! You can also check it for any signs of damage and do any repairs. Check connectors for corrosion, also check the condition of the metal clip that holds a load of brown earth wires together under the loom wrap just a bit back from the coil connector.
yep I did that, it's the green/yellow wire you can see towards the left of the picture!