I assume that if I don't have the Park Assist feature already, and my right bank of switches are all blanks, that there is no wire loom in place already for that side? And I will have to draw power from 12v somewhere for the LED button light?
Yes, mine was blank and there is nothing there. The blank switch is merely a dummy and the buttons are just "one" cap. So you can't even use the housing blanks (that was my original intention). LED, yes, I went crazy and removed the entire console (for other mods mind you), but tapped the led lighted ring around 12V socket. Any source that comes on with lights would work.
And lastly, are the circuit boards different in each switch module? By that I mean does the switch that only comes with 1 button (Park Assist) not have the circuitry or LEDs in place for the other two spaces? I'm trying to determine if I can just buy the 1-button switch and flip the board around, or if I need to get that plus the 3-button switch to use as a donor circuit board from like you did.
Thanks!
Yes, the boards are different and "filled" with leds,resistors etc as required by the part #. Seems silly to me, but that's how it is. Pic below. One on top is lower Park, other all 3. You may I ask why I have these. These were extras I got because my order got screwed up and they told me to keep them. I burned up the 3-button switch board in testing setup
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You can't buy just the 1-button switch and flip because the board isn't finish in the other spots.
So you could just buy the 3-button and flip (or don't flip) and live with the other two buttons images being there...but i didn't want that look.
That said, I do have an extra housing (last pic) of the Park Assist only button and you could simply buy the 3-button. I'll ship it to you for nothing. PM your address.
Just in case you didn't know, if you don't want to go to all this trouble....Double Apex sells a kit for $200...
http://www.doubleapex.co/products/mk7-garage-control?variant=26367482311
I didn't want to spend this much. I spent about $75.