Thank you for coming back to me.
The boat is a 1984 40 ft Steel Narrowboat, Thornycroft 90 based on a BMC 1.5 engine. I have had her since 2014 and based on the L and L near Skipton.
On a couple of occasions she refused to start, (clunk) not firing until someone from RCR came 'tapped it with hammer' and off she went.
As all the wiring is of an age and somewhat patched in places, I am considering getting her rewired.
Any thoughts on Marine Electricians for the engine would be gratefully accepted, as I can google and google and still don't know where to begin .
Many thanks