if no one can help,find a local mobile auto electrician,I have the no for one I have used,he is good & will try & talk you through over the phone,he came out to me he spent an hour or so, £40.00 invoice iirc it saved a lot of issues further down the line also took a look at another vehicle while he was there to confirm our diagnosis [^]
Commer Dandy by Dandy Caravans
The Colonel Mustard