How? Halon is outlawed these days.

"the ground for the light should come from the extinguisher switch, the power for the light from the ignition via a fuse that may be inline as it is an add-on system"

That makes since.
They tested as a ground when connected to the tank.

The replacement is called Fe-36, you see it in a lot of race cars now

Cool, thanks. Anyone know what size cylinders these systems use, and where to buy?

This is the brand I see, http://www.racesafe.com/html/safecraft.html

No idea on best pricing as I have not been looking

Thanks!

Sea-Fire and Fireboy are probably the most common for marine systems. Believe the new ones are either FM-200 or Novec 1230. Both Halon type replacements. However, they extinguish the fires a little differently than Halon and they do not leave a corrosive residue behind.

You can't buy a new Halon system now because as mentioned it is outlawed for "new" systems. However, there is a loophole where you can recharge Halon if your container has the ability to be "re-built" Little bit of typical federal irony...Not only did our government outlaw Halon back in the 90's, they are also currently the largest consumer of Halon 1301 in the country. Lol...

Any local Fire extinguisher company can check and refill your Halon system. Keep the Halon, its still the best fire extinguishing agent out there. The FAA still recommends in for aircraft.

Not necessarily. Most pre-engineered bottles I've seen are not rebuildable. Most extinguisher guys don't bank Halon either. However, if it's just down on Nitrogen, they might be able to re-pressurize. Not sure about FAA, but I do know, you cannot purchase new, or install a new Halon system, only recharge if the existing system parts are available and rebuildable.

I had my Sea Fire Halon inspected and weighed to make sure it was still fully charged by a dealer I work with that does commercial fire suppression systems.