Is the 40 amp alternator output the save for the BX2350/60 and BX1850/60? Seems it wouls be. I ask because I'm in the process of wiring up two 55 watt work lights and I'm assuming I can run these off the stock alternator, which I though was 40 amps.
I have BX24 and i am including a pic of my alternator. I found a pic on this website that shows the old dynamo alternator that looks smaller and has solid casing. perhaps you could compare yours and make an educated guess.