I can dbl-confirm that Martin's ashtray install methods works just perfectly. The circuit is indeed 6.6volts however it delivers 9V when the SkyBreaker is connected. More than enough current flows to power ON the kit. Looks good!
1) Remove ashtray
2) Unscrew the two torx screws
3) Pull out the assembly and set aside (no need to unplug anything, switches etc)
4) Splice both brown & bleu ashtray light wires and terminate as you wish (soldered mines, covered with 2" of electrical tape. Sufficient)
Brown = ground (goes to SkyBreaker black)
Blue = positive (goes to SkyBreaker red)
No need to remove the console, the cabling is so small it's easy to push under with your fingers. My controller is now residing in the armrest compartment same as Martin's initial idea. I've hidden the 385 kilometers of wires under the carpet/driver's side however
In all, the installation takes aprox 20-30min. From sliding out your OEM windows to closing the lid of the armrest compartment! Way too easy and extremely unchallenging (i.e. boring)
The rest really is to snake the little WD cable around the hoop. Copy what I did (see pics below) or if you are braver than me, pull off the trim and tidy everything inside of it. The reason I chosen this method is because it will be easy to remove for cleaning. I don't want to bother removing the trim each time - I'm suspecting brittle clips under there!
On a side note, I couldn't push back my Boxster inside its storage shed so I had no choice but to start it up. Guess what, went for a 2hrs topless drive (warm and bright sunshine here today). Just came back all fixed lollll haven't driven this car for almost 1.5months. What a blast each time