[CA] [CA11] Reconnecting X10 Autopilot

[Eniramyar]

I purchased a boat with the following Raymarine equipment:

Autopilot:
X10 Smartpilot
Fluxgate compass
Type 1 pump
RF base
S100 Remote

Also,
Raydata display at lower helm
ST60 Multi at upper helm

The MFD, GPS, radar and sonar are new Garmin units. The previous owner tells me he disconnected the Autopilot when he install the Garmin MFD. He says it was functional when disconnected but honestly didn't seem to know too much about it. I would like to get it going again, preferably interfaced to the Garmin MFD for course tracking, but I'll be happy with simple heading tracking.

Questions:
1. Is the S100 adequate as a standalone Autopilot controller, or am I missing a necessary hardwired controller?
2. I believe the Raydata and ST60 are only data display units and don't offer any autopilot control functions - is this correct?
2. Can I connect the Seatalk backbone to the Garmin NMEA 2000 backbone and have the autopilot track a course on the MFD?

I've downloaded and read all the appropriate Raymarine manuals but the above is not clear to me. Thanks in advance!!