I have replied to the thread but if he has had it from base van, I don't know why he just doesn't ask them , they are absolutely genuine and would go out of their way to help, we had our first two off them and Rupert the owner is as straight as they come.I don't suppose you could ask your mate if he could help re this thread ... would be great if he could.
Thread 'Help needed with electrics' https://www.motorhomefun.co.uk/forum/threads/help-needed-with-electrics.297021/
That van he has their has got completely different electrics to ours , we don't have inverters and stuff in ours.
We put our own in.