Very helpful and insightful tech in what you have shared here. Thank you
I am currently experiencing this on my Canadian spec (24V) '86 BJ70, but I have just modified my BJ70 by installing a different engine. My original 3B was a total loss so I have replaced it with a 15B-FT. Since the initial start-up of the 15B-FT, these three indicator lights have remained illuminated constantly.
I have confirmed that
A) my charge lamp relay is good (the relay checks out, plus I had a spare relay to use as an independent check)
B) The 15B-FT alternator is good. Removed it and took it to an alternator rebuild shop. The shop confirmed that it charges (output was 28.1V) and the lamp off signal activates after steady charging is achieved. Also, the shop confirmed that the 15B-FT alternator has much higher capacity. [Max output was beyond 120 amps at 24V which was the equipment limit in the shop]
Based on your experience, could you project other possible sources for these indicator lights to remain on?
Thanks