This is correct. I called for my 22 ST and they took my card info. A few weeks later got an invoice and mine arrived shortly after. Waiting for cooler day to install.
Call ADDCO
Dongar Technologies makes a nice adapter. loops through the rearview mirror power. though if you want parking monitoring you'll want to find a constant 12v signal
ordered FIAMM El Grande horns for my 2022. installed these on my wife's Subaru and they get attention
hoping for the best, they only require a 10A fuse and the stock is a 20A. gonna bolt them in and pray to Vulcan
so, added about 10lbs of mass with some killmat to the exterior
covered the outer rear with closed cell foam so it compressed to the body when bolted in
added some stuffing. bass now set to 0 for my taste [was at +3]
it's pretty good now. the enclosure doesn't resonate and that's a good thing. all that energy is now bass output
here is the impedance sweep and T/S measurements of the driver in enclosure, sorry i didn't have the stuff to measure the enclosure volume
https://imgur.com/a/K2ZOkvE
just got a used 2022 and i cannot hear the added noise. even holding 2nd gear and toggling the S button does nothing to the sound. either previous owner defeated it or it's not enable anymore
I need to pull mine out and measure the enclosure volume. this will determine what subwoofers can be swapped in successfully.
I'll probably sweep the stock woofer since I'm in there and have the gear to do it
it looks like the JL Stealthbox takes advantage of a bit more area and might have more volume. I'd really like a 10" back there if possible.
I'll post my results here.