This is what I ended-up going with as well.
Tuning my setup using the driver's headrest, while sounding great in that seat, left the passenger side way too bright and harsh. And, I didn't want to try a bunch of averaging. Ended up sounding great using the armrest position.
Funny enough, capsaicin is considered a deterrent. I thought they had talked about formulating the wire insulation to include this but maybe not. There is capsaicin laced wire wrap tape available on the market ... sounds like a pita to retrofit.
The t-harness essentially interposes 3 of the channels: center, rear left, rear right. All of the other channels are directly wired into the amp using the factory harness (assuming the amp location is in the stock location with upgraded/lux package).
An alternative to the t-harness is to wire...
They can get to it. The logged DTCs (for the last 90 days) are retrievable via FordServiceInfo and the online service info subscription. It costs ~$27 for 72 hours of access for the public. You'd then request real-time info via a form ... which returns with access quickly. You do have access to...
The Ronin's are a bit fidgety. You do have to push in while rotating but you have to get the technique right. I had installed it, removed it, and then reinstalled. Took some fidgeting at first. Not much torque was needed thereafter. Having to crank on it indicates, to me, the technique of not...
Found a couple of threads that may be of interest.
Here's one:
https://www.bronco6g.com/forum/threads/rubber-coating-on-the-window-switches-wearing-off-already.88142/
And another:
https://www.bronco6g.com/forum/threads/rubber-breaking-around-window-controls.71459/
Replacement switch...
Just reflecting the 0W30 is Ford's recommendation for cold climates. Mobil 1 has good oil and is a fine solution with regular oil change intervals. Are there better oil formulations available? Probably but keeping up with a regular change interval is equally or more important re: fuel dilution.