Great guide and helped me understand. Couple of bit of learning from me. 1. Hawk eye v5 does not allow you to set ride height. You can see the heights and you can adjust them but that's it. When you take the key out the car and restart it'll all go back to where it started. I've...

I have just had a bunch of warning lights up on the dash and the plugin has identified the valves as the problem. I have checked microcat and it looks like the air compressor box is 1 unit. Does anyone have the part numbers for the control valves in the box? Steve

Tried flipping the switch at 50 mph (when TCC was already engaged) left it for 1 0seconds and put it back, No flashly lights. - No suprise really - just thought I'd update you. I want engine braking on steep descents in low first - just in case that was not clear

The application of this that I am after is to improve engine braking. I have gone as far as to design and build a circuit that will implement an interlock such that the TCC can only be engaged if in LOW First and drops out if you push either of the cruise control buttons. the M and S lights...

Tried that. Not at 40mph though. Low box first gear. 2000 rpm - engage lock. felt it cut in. 5 seconds later M and S flashing. This was not because the engine was going to stall. There was plenty of rpm. Any ideas? I'm back to my current detection theory. Might try putting a bulb or...

Charles It's the former. There is 14v on startup and when the TCC engages it drops to 0v. I have subsequently cut the wire - to simluate TCC engage only to find the M and S gearbox fault lights appear on the dash. The electrical diagram only shows TCC to solinod to earth. How could the TCU...