Club 80-90 Forums

If you are talking about the fuse inside the box - I think that it is 2A going by previous posts.

Yes. If you have checked that it has continuity that is fine. This blows if the coil overheats, usually around 130 deg.
Will need to search elsewhere then.

Have you checked the thermal fuse in the bottom pic?

I used to use one in the 70's for my bikes also! Still managed to burn a hole in a piston when a carb went out of tune on a 200 mile run. Are they really that price now?
I now use a gas analyzer.

I would take a wild guess at the fact that somehow you have put all the starter power through the braid due to the lack of another earth! 
Who knows what route the power took to get there.

£2 for 2x lm7810 - I know what I would fit!

Haven't you done it yet?

Stolen a pic from an old post, you can see it mounted upside down - you can't see a heatsink though so I presume that they didn't use one ( they should have done ) Ignore the finger as that was something else:

Just need a suitable thickness piece of aluminium, it provides contact for the heatsink as the 7810 is mounted with its back uppermost. You will see when you fit it.
Some years ago I found a source for the original chips - they were over £70 each! A 7810 can be had for 50p.

LM7810 is good for 1.5A whereas the LM2940T is only good for 1A.
Mounting an LM7810 upside down isn't difficult, all you have to do is ensure that there is a suitable heatsink provided.

Wasn't the head re-tightened after running for a while as per the manual - usual reason for leakage after replacement? -after about 1000 miles (with engine either cold or warm) retighten cylinder head bolts with breaker bar, turning bolts in sequence 1/4 turn (90°) without loosening them and without...

I wouldn't worry about ethanol - it is bio diesel to be concerned about with a diesel.

For a £5 part! That is really taking the P.
I would replace all the leak off pipes and cap as soon as you can get proper pipe and cap from Brickwerks. The rest of the pipes may well be on the way out if they are of the same age.

It's not the injector - it is the leak-off pipe as suggested above. It is leaking from the end cap - to fix, get another piece of hose same internal diameter and blank the open end with a bolt/plug of some sort and job's done.

Motorhome is not a body type - presumably you mean the DVLA term Motor Caravan?
You still have not said why you are wanting to change the body type. What are you hoping to achieve?