FYI...I just checked the trunk on my '19 GT Premium 401A 9 Speaker car. The empty blue plug is there. I do NOT have active exhaust or magnaride...
So, I'm off to find some parts for an upgrade.
I'd be interested in one of these harness's as well.
Tapping into the signal straight from the head unit would take away any concerns of the low end rolloff in the amp.
Congrats! Nice ride. I was torn when I bought my '19 GT on the VB or Kona. I ended up with the Kona. I like the course metallic in the Kona. Either way, they look awesome sitting in the sun.