[Ilkka]

OK, wired the red wire of the gray harness to J67.

Now the system won't start (gauge nor any leds on the main unit won't lit) until I start the car. The J67 won't have any voltage until the car is started, is this the reason?

Once the car is idling, the F-IDC led starts to flicker and the two other leds aren't active, just as it should be. With the threshold trimmer at the minimum, if I blip the throttle, the THRES led lits but nothing comes out of the nozzle. If I put a jumper to the SYS, the nozzle outputs a nice cone. So no change from what was noticed before.