Right - think I will exhaust my stock of goodwill with you all, but here goes anyway
Blowing 15A fuse I think is sorted - fine, we'll see how it goes. Many thanks to all
Now connecting things up, and as far as I can see, everything has gone back exactly the same way - except regulator is disconnected.
Here's the thing
With the 15A and the 7A headlight fuse in place - all seems good. Ignition on and we have dash lights, indicators work, starter works etc - all good.
With the 15A, the 7A headlight fuse in place, and then the 7A tail fuse in place. Ignition on, and woe! All 4 indicators on permanently, but at least headlight and tail lamp light up!
Something clearly amiss....As ever any clues gratefully accepted. Short again - bad earth? Nothing obvious that I can see..