Still sorting this out, but getting closer.
My service tech discovered new information regarding retrofit kits. The instructions I was originally working from is dated 5/2012, yet the latest revision occurred in 2014 and includes a wiring harness with 5 branches at the headlight connectors (X13420 & X13421) instead of 4. In cars without SA524 (ADAPTIVE CORNERING FOG LIGHTS/ not adaptive headlights), this revision utilizes all of them. The best news is that this revision no longer requires a FRM module replacement!
I will try to acquire the latest revision and post it here once I know that mine will be finished, coded and working perfectly.
Meanwhile....
(carbon fiber diffuser showed up today!)
