I too have the Fireboy extinguisher in my engine compartment. It's fully charged, however, the green little light diode on my helm is not lit. I know that it has never been discharged and my boat is a 2001, but for peace of mind , I would like to be comfortable knowing that the automatic extinguisher will work in case it has to. I've often wondered how the green little lamp is supposed to light to let you know the system is funtioning properly.
Capt. Harry Fritz, III
2001 246 Open 5.7 Horizon MPI