The ONLY difference between the AUX and AUX/s is the software chip inside. I talked to the lead R&D guy there today and I am trying to work something out.
As for the harness.... If you take the radio out and look all the way down and to the right you will see a cavity that the black box will fit into after you shave the mounting ears off with a bench grinder. You will not get it back out after you press it into place without using a small saw and simply triming a small piece of plastic out of the way. Trust me, no biggie, maybe a 1/2 inch or so. You will see what i'm talking about when you go to remove it in the future. As for the wiring, just route the best that you can, trial and error. I never did get the right side to fully clip into place, but you really couldn't tell, even after I pointed it out to other members.
There is also a FRD03-pod/s that lets you use the buttons on your radio and I think the wheel also. This is not cheap, the best I found so far is $139.00.
Also there is an FRD04-pod/s. Haven't dug around enough yet to know the difference. I will be talking to the manager of PIE monday to get further details.
SOLD 12/31/2021
Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.