hmm...I had a similar issue. I did relocate the ecu and extended the sensor wires. Also using the Molex connector. But I heard the ecu solenoid click, a few seconds later a second click (like it was turning off. Prob not getting signal from torque sensor).
Had to take the whole assembly out and found one of the thin sensor wires broke at the solder. re-soldered... all fixed.
I question the no click from the solenoid at all. Power to the ecu? Power to the Bruno controller? Connection(s) From the Bruno controller to the ecu.
ALSO...if relocating the ecu it MUST have a dedicated ground to it.