This may be the final post for the Eshostar rescue...
As I had the ribbon cable run from the house to the dish, I verified continuity before hooking in the ASC1 actuator controller. To do this I connected the two leads for the motor together (in this case red and white wires), as well as the two leads for the sensor wires (brown and orange on my setup):

(Note that the ribbon cable I ran is two strands of RG-6, plus the motor control wires, shielded sensor wires and LNB polarotor control wires)
I then went to the actuator at the dish and verified continuity using a digital and analog meter. Here is the analog meter on the motor power wires:
Here is the analog meter on the sensor wires:
As the wiring to the house (and receiver) tested good. I hooked up two sets of wire jumpers to the motor. One set of jumpers was attached to the motor power wire terminals and one set of jumpers was attached to the motor sensor wire terminals. I didn't take photos of this. However, the motor sensor jumpers ran to the analog meter set on 10 ohm and the motor power jumpers ran to a 18V Milwaukee battery pack.
I hooked up the power wire jumpers to the battery pack and watched the analog meter. It fluctuated slightly, so I slowly connected and disconnected the power to the motor to verify the reed switch was operating.
Once I was satisfied that the reed switch (sensor) was operating, I verified east and west limits and ran the dish to the west limit. Then I attached the ribbon cable wires running to the house and reinstalled the motor cover.
As the motor wiring tests went well, I hooked up the ASC1 into my existing setup. I then began the Diseqc 1.2 setup process...
The setup process entailed running the dish from 139W to 78W and setting satellite positions. The Manhattan receiver apparently communicated well with the ASC1, and as I saved positions the actuator controller prompted that the position was saved. As I had the C-band functioning well, I went ahead and established for future additions.
This is the wiring schematic I have right now, which should accommodate future expansion (including motorizing a Ku dish) and moving some things around:
At this time, I have some tidying up to do with the FTA setup on both the house end and C-band end of things, but here is the final bit of my motorizing process (ASC1 hooked up and working quite well):

Now that I have the 7.5' Echostar/KTI setup and operating well; I have to figure out how, when and where to place the 'new' 10' SAMI...