Thanks guys, typical vdub then, any idea what It looks like…std type or long, connections on end or long side etc. Thing is I can’t find anything on the relay plate and don’t remember seeing any relays behind the centre consul when I did the heater matrix.
I may also try and wire up the spare connection on the rear diff for a lamp to indicate if the freewheel is on or off. wiring diagram shows a spare contact, not had time to check the diff yet, so we’ll see.