In article PG5ag.20818$ZW3.19044@dukeread04,
Jim Macklin wrote:
I've never seen a Bonanza without electric trim and an
autopilot installed.

Apparently not :-)

What you have seems to be just a wing leveler with heading and
[maybe] tracking.

Nope. It does heading, tracks nav, altitude hold, course intercepts,
and coupled ILS approaches. Once we get the kinks worked out of the
new add-on box, it'll be doing GPS roll steering too. We've got one
driven from a CDI, another with an HSI. It just doesn't have electric
trim. It's an option, and we don't have that option. Wish we did,
but we don't.