Originally Posted by
BDAttitude
I think not correct.
INTLK coming from the right side is a sensing channel activated upon switching K2 by applying 14V+ to A/P TRIM SPEED HIGH.
You can probably clarify this by posting wiring diagram 22-13-11.
Indeed ... it could explain some weird things however.
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I wish I had all the wiring diagrams, but unfortunately this was the only other one I could find online. You would think more would be out there with all the interest. Like I said, not an expert reading these things anyway. However, I don't see anything that would block the Main Electric Trim signal from getting all the way to the trim motor controller, so I'm still curious what happens if the controller is getting signals from both the Main Electric side and one of the automatic sources (Speed Trim, MCAS, Mach Trim).