In search of prop de-ice ammeter

[James Fulginiti]

Anyone know where I can find a 3E1872-1 ammeter?

[squeaky.stow]

You may want to get your existing prop de-ice ammeter checked before replacing. Mine was not working and the actual gauge checked out fine. There are two small shunts hidden way up in the back of the CB panel that are known to fail and render the prop heat gauge inop.

Unfortunately they are really hard to get at unless you are having major panel work done.