Now ( I think step 5?) connect everything up
a.KPLAY harness "splitter" female side connects to main (BIG ASS) harness from car. KPLAY BIG ASS harness then plugs into head unit to replace stock harness. The white plug from the KPLAY unit and the speaker jack should already be plugged into your KPLAY unit.
b. The car's pink LVDS plug now gets plugged into the KPLAY LVDS-out port
c. The KPLAY LVDS cable, which is already plugged into the KPLAY LVDS-in port is now plugged into the head unit to replace the stock LVDS cable.
d. If you haven't already, plug back in the MIC and the USB cables into the KPLAY unit.
e. hopefully your buetooth and wifi antennae are still connected
At this point everything is hooked up. I would turn on everything and take some time to make sure your connections are good and android auto or carplay works. turn on the car in accessory mode. Fo some reason, the first time I did this the display showed a smaller menu screen. later that went away, so not sure why. Hold the menu button down for two seconds. this will switch the screen over to the KPLAY unit. (Now go to the settings icon and make sure carplay is set to wireless if that's what you want.) come out of the settings and go to android auto. Make sure android auto is installed as an app on your phone and working. with the phone plugged in, android auto should open with the maps interface on the car's display. If you find the it repeatedly connects and disconnects, or won't connect, you have a bad USB cable. Turns out, of three cable, I only had one that works well enough. It seems to work well thankfully. Until then I was quite perplexed, wondering about software upgrades needed or security blocks on my phone - the usual anxieties. It's none of that - its the cable my friends. (Whew!). SO to backtrack, I did all this before running the USB cable through the center stack port, and that is why I opted to plug it in the way I did. I would say try out the connection as simply as possible and make sure it works before you add in a more complex path.
So that's where I'm at. Plan to put everything back in today. Really good news: this Korean unit works in US cars!