Once the center console is out, the routing of the wires is pretty easy. Aknowles put together a good DIY.
I used a license plate frame camera (Boyo VTL375 Ultra Slim Zinc Metal Black License Plate Camera). If you don't know what you're looking at, you would never realize it's a camera.
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1995 Porsche C4 Cab
2016 BMW M2, 6 Speed LBB - ED 7/2016
1997 993 Cab - Sold; 1997 993 Turbo - Sold
2001 Boxster S - Original Owner - 30K Miles -SOLD