I ended up tapping into fuse E1 which should be the radio according to my diagram. There is a hole just above the fuse panel that I put a bolt in to use as the ground. I found that tidbit on the forum when someone hard wired their radar detector. I ran the wire under the sill plate. Very impressed with the light itself. Be careful cleaning though. I used a microfiber cloth that actually caused some very slight scratches I was able to polish them out with some Plastix.
I put the control next to the document holder with some Velcro.
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2001 Boxster S Lapis Blue
TS Cat Bypass Pipes and exhaust
iPad Mini Dash Install
DEPO Tail Lights