I know that I need to take out one of the wires on the harness pictured to the right.
Also, LDM, where is the smaller harness that came in the package with the Metra 70-5519? I don't see it.
The smaller harness is the white plug on the left for 8-pin sub/center amps.
The White/Green wire of ASWC goes to Pin#14 of the 20-Pin plug.
I removed both pins, and put one back in at Pin#14 (blue wire in my photos) and connected it to White/Green of ASWC.
(I used the 20-Pin connector from Impulse FD-6000 instead).
There is only a White/Green wire on the
Metra Axxess ASWC (there is no White/Black wire).
1) Connect the Black wire of the
ASWC to ground. You may use the same grounding point as the aftermarket radio.
2) Connect the Red wire of the ASWC to a 12 volt accessory wire, one that turns on and off with the
ignition key.
Connect the Red ASWC wire AND the Power wire of the Radio to your power source (Run/ACC or RAP wire). That way they both stay on together and you have steering wheel volume controls when the engine isn't running.
3) Connect the White/Green wire of the ASWC to pin 14 of the vehicle.
I didn't use the attenna control wire, I just used tape to cover the end up.
I don't think you hook up the mute wire, try it unhooked, ensure ASWC installed, press Mute on the steering wheel and see if the HU goes to ATT (i.e. Attenuation, it should be almost completely muted). There may be an ATT on the HU also.
If the ASWC isn't working correctly, you may have to program it. I summarized how to do this for the Gen1 LS here:
http://www.lincolnvscadillac.com/showpost.php?p=907918&postcount=62
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