I have a 1980 westy with original euro hookup,when i connect to mains the lights on the cooker panel and eber pulse on and off
anybody know whats causing this
Sounds like the in built leisure battery charger causing the problem if the equipment you mention is 12V which, from your description are. Under the seat from what I have read, locate it and switch it off and see if the problem disappears.
haven't seen a westy one in the flesh so to speak but the ones I have seen in German vans are fitted under a seat and housed in a steel enclosure, probably have vents and will definitely have wires going to it and a mains connection. Look under the seats, should spot it if fitted. May be a westy owner will tell yuou the exact location.