Thanks.
I found the pin out for it. All 4 GS pins run vertical on the left side of
the connector. Now I've got a place to start looking.
Jim

"Aaron Coolidge" wrote in message
...
Jim Burns wrote:
: We've got a dead glideslope needle on our #1 indicator. (KI-209 driven
by a
: KX155 12v) GS flag works, needle stays centered.

: Can someone explain the wiring?

The signal from the KX155 is a small voltage (current? I can't
remember...)
that drives the needle up or down. This comes over a pair of dedicated
wires. I can look the specific pins up, but I don't have that data handy.
A separate pair of wires drives the GS flag.
The GS needle in the KI209 is just a voltmeter and probably will last
until the cows come home - the same is not true of the VOR/LOC.
--
Aaron C.