Oops, on further research the manual in question was found ,
downloaded and printed.

On Sun, 11 Sep 2005 20:20:41 GMT, (Ray Toews)
wrote:

Any one have a user's manual for a Garmin 100, panel mount GPS. It is
so old Garmin doesn't have a download on it's site, but it works well
just doesn't have a data base.

Failing this will a 150 mount in the same tray?

ray