Ron Wanttaja wrote:

... but I'd like to put in either a dummy radar or possibly a "weapons
status" display.

No where as cute, but a one time I owned a 172 that landing gear switch
with indicator lights. I always wanted to figure out the circuit that
would make the lights "fail" randomly once every 20 hours or so.

--
Frank Stutzman
Bonanza N494B "Hula Girl"
Hood River, OR