A home-built airplane, since you can't install parts in the
panel that are not approved. Now if it is a cigarette
lighter plug-in you can do what you want since it is not
part of the airplane.



--
James H. Macklin
ATP,CFI,A&P

--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm
See http://www.fija.org/ more about your rights and duties.


"mikem" wrote in message
oups.com...
| Three LED (red, amber, green) over/under/just-right
voltage indicator
| which tells me if the alternator is on line. It takes up
just 0.005
| square inches of panel space.
|
| A home-brew auto-muting stereo music switcher which added
MP3/CD inputs
| and stereo headphone jacks to my otherwise mono audio
panel/mono
| intercom. Auto mutes when there is activity on the
aircraft radios or
| intercom. Cost about $50 in parts, vs $1000 for the high
end PS
| engineering audio system.
|