Got the interior part of the M25 Blinder done today. Sorry for the crappy pic, it's dark, I used a flashlight to help illuminate the switch area. Basically I removed the panel that's under the steering wheel (there's one screw near the hood release, then it snaps off, then you undo the hood release wire and various other attached things), and then drilled holes in it (3/4" hole saw for the switch, and roughly around 5/16" for the LED holder). This was really the only easy place to put them, and I kinda like it being out of the way like this anyways:
And here's the front all done up:
When I went back to fine-tune the alignment in the front and tighten the screws, I found it damn near impossible, even with the aforementioned gearwrench, to apply appropriate torque to those screw heads sideways, and also keep the heads aligned perfectly while trying to torque down. I gave up, got them situated correctly with the screws not fully torqued, and superglued the joints into position