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THE FINAL UPDATE:

Well, got the fat lady's ass to ride level. Took some tweaking with the wires, I just put up a vertical measure out of a bike pump (you know, the upright one), secured its shaft...

The shocks are Bilstein B6 with less than 1000 miles on them. I heard that I need to force vent the car to rest on low props placed under the frame ahead of the lower control arm forward mounts on a...

A follow-up with a wee tiny issue here:

I installed two Arnott 2200 heavy-duty air springs with no problem, but there's one funky thing:
I had three air spring solenoid valves on hand, two Dorman...

Okay...
THE RAS IS OFFICIALLY WORKING, GENTLEMEN.

There is, of course, one wee itsy bitsy problem.
The height sensor thinks the car is too high.

I think it has to do with the position of the...

The chafed part of the wiring lives directly behind the fender cowl. The fun part is that there's another HUGE harness below and between the A/C canister and the cabin air fan. Guess what - its tape...

I don't think the wires are switched, it seems to click the vent open to vent the air springs through its solenoids. It seems it does not want to start pumping air, tho I might be wrong.
The RAS...

OKAY! I know I took my sweet time to get here, but this is one BIG update.

Remember that the RAS module had too low volts to operate? Tested the power line, wire 1053 (LT BLU/PNK) between the...

UPDATE:
The RAS project is very much alive. Didn't have the time to get around it, had the control arm frame mount welded up, she's good to go. Dropping in new cats this week, for the RH pipe ones...

UPDATE (bruh, another one...?):

The RAS project is very much alive. Didn't have the time to get around it, had the control arm frame mount welded up, she's good to go. Dropping in new cats this...

UPDATE:
Not really an update. Tested all out, it's definitely bugged somewhere in the wiring section I've identified before.

Just to let you know I'm working on welding the frame (the infamous...

Yeah, but I tested the volts also with piercing probes. 1 and 15 have 8.5 V when the motor is running. With all connectors hooked up to the RAS control module, pin 22 has 1.5 mV most likely that...

The RAS fuse in the BJB reads normal battery voltage, +1 V more if the motor is running and the alt is charging.

Uhhh... Pin 2 in the diagram (and the FSM wiring diagram) should receive 12 V from...

Went further with testing, and the Wiring Botch-o-Meter is close to the red line!

I'll repeat some things to make the findings clear:

1. The RAS takes all times hot battery power for the...

THE SAGA CONTINUES, AND THE SITH STRIKE BACK.

Meaning - we're not there yet.
Still have so little time to do this, but I keep at it.
Here's what I've done so far:
1. Decided to unhook all...

UPDATE: Okay, the day has been somewhat successful.
I dug through the wiring diagrams and found the splices and power distribution connectors between which the things going on now in the wiring...

Sure, grab a seat, brewskis, and popcorn! ;)

MOAR NEWS: The plot thickens.
The fun part is that when I hook up the control module AND turn on the ignition, I get 12 V on both RAS-related fuses (CJB #5 and BJB #8)... and with one of the 2...

UPDATE, DAY 2:
With the new compressor and a known working RAS module, I installed both (brand new) air spring solenoid valves.
Now I lost voltage at air suspension control module harness-side pins...

OK, UPDATE:
Finally got some free time to continue the diagnostics:

Hooked up a new compressor and a known working RAS control module. Nada, got the CAS warning light again. This is definitely a...

UPDATE:

Getting there, but slowly (no time on my hands until next week, gah!).
I'm gonna run FSM diagnostics on the EVO/steering angle sensor connections, since circuit 57 is affected. Gonna keep...

More updates:

On with the RAS diagnostic procedure.
I already pinpointed several problems:
Circuit 57, suspension module harness pin 6 (wired to the steering position / angle sensor) has 80...

I dug into the dash.

The mystery splice off connector C2131b, grey/black wire (circuit 679) followed across the dash and down pillar A. It joined a harness that was not in the cable ducting along...

Yup, but I'm in luck: got the whole FSM diagnostic procedure on hand. I don't have the Super Star II scanner for the air suspension, but from what I garner from there and the wiring diagrams, the...

UPDATE:

The weekend was semi-successful with the air suspension diagnostics.
The vent valve is dead (the diode on the coil and the winding are). Ordered a new compressor from Arnott; the old one...

Well, Dereck's writeup says the ride height sensor should be driven with 3.3V during the bench ohm-out. I do not know why said 3.3V specifically.

It's either a specifically test-bench voltage...