No worries,we went down the electronic avr route,as we had one hell of a problem with the original set-up when we first bought the generator,it was missing it's Isenthal regulator,and was in a quite serious overvolt condition with no manual control whatsoever on the handwheel,on our set the switchboard has been moved from its normal place on the side,to the rear of the alternator,and a wire had been put back wrong on the terminal block inside the alternator,and said wire was also put on the back of the terminal block where it couldn't be seen,we went down the electronic avr route after watching a video on youtube,which led us to an old boy here that specialises,and makes avr's,and after a phonecall sent us the one we needed(i'll put the address,and type up),fitting it is fairly easy,on your set,behind the switchboard will be a vent,and access to the rear of the alternator,and behind it will be a terminal block,on which you'll see two wires going to the sliprings,run the set up,and see which one is positive,and which one is negative,and then take them off away from the block,connect your avr up according to its instructions,and away you go,when we first fitted ours,it wouldn't self-excite from start,so first of all we used to flash it from the batteries,but you must run the flash wire through a blocking diode,as as soon as it powers up,it'll try,and put the field volts back into the batteries,blowing the fuse on the avr every time you do it,eventually we sorted out the original problem,and use the original system to provide initial excitation,until the electronic avr catches up,and takes over,but you must have a blocking diode in the positive lead from the electronic avr,and another in the lead from the original set-up,to prevent the new avr back feeding into the old system,so one diode from the terminal that field wire positive came off,going to the field wire,and your wire from your new avr connected to the field side of the diode,with a diode in the positive lead from the avr,i'll put the address up of where we got ours from,but i guess you'll have someone more local to you,it wasn't a cheap avr,but it was going to work out cheaper than buying various ones off ebay,and seeing which one actually did the job,as it goes,it's a bloody avr,from full load to off-load in one hit,there's no voltage spike whatsoever,and i've managed to wire it all up,that i can use either the electronic avr,or use the Isenthal when we're out at a show,and take its cover off,and display its contact points,and solenoid working 😀😀
