There you go. I left the shell off the connector because it would have been too tall, and it would have come too close to the top wing skin and wiring conduit and stuff. This is simpler without the shell.
But you can see a black nylon wire clamp that I used to secure the wires for strain relief (left side of the servo). Here's the servo installation...TruTrak's bracket replaces the lower triangular bellcrank pivot bracket, and the servo bolts right to the new bracket. Trivial!
Be sure to use loctite or lockwashers or whatever on the bolts that thread into the servo. Otherwise there's no locking mechanism for 'em. TruTrak supplies the pushrod and rod ends, and you just drill a hole in the bellcrank at a specified location. It couldn't be any easier. For what it's worth, I had the bellcrank completely out of the plane to drill it, but theoretically you could probably take care of it without removing the bellcrank at all.
It's in.
I tested it on the ground, and everything appears to work as it's supposed to. But...
Remember I said I wired GPSS serial data from the GX60? Well, I did...and the Digitrak will use GPSS data just fine. It will hold and follow a track. But it WON'T follow your course line with GPSS data. It absolutely needs "moving map" serial data in order to follow the course line.
On the GX60, there are two serial ports. In my case, one is wired to the SL30 to provide cross-talk database and DST functionality. The second port is wired to the Digitrak. You go into a setup screen to configure the serial ports, where you can assign different data streams to the different ports. All well and good, except the GX60 will not output moving map data on two ports simultaneously! The SL30 was currently receiving "MapCom" data, which is basically moving map data plus some features that the nav/com needs to display a selection of nearest COM and VOR frequencies, plus freqs for your waypoint. If you then try to assign "MovMap" data on port 2, it won't let you do it. It has no problem pumping MapCom to port 1 and GPSS to port 2, but you can't pump MapCom + MovMap. Damn!
The solution was to splice the serial input for the Digitrak into the serial port 1 output of the GPS. Multiple devices can all tie into that same circuit to "subscribe to" the same data. That's what I need to do...
For now I left it as-is and temporarily disabled the SL30's MapCom data. This let me pump MovMap data over port 2 to the Digitrak.
I'm gonna jump ahead a week or so...
I finally got around to splicing the Digitrak's serial data wire into port 1 of the GX60. This was actually pretty straightforward, thanks to the access panels in the front deck. I can't reiterate enough how helpful those panels have been.