DIY e-guitar - Part 6 - Wiring testing and more finishing

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Testing box
So, after having the piezo pickup the number of pickups grew to 3, and wiring them for testing which combinations I do like is not too easy if everything's mounted inside the guitar, I decided to build a wiring testing box for testing different wirings to find the one I like the most. All the electronics mounted inside a shoe-box, with speaker wire sockets on the side (4 sockets are just enough for 3 pickup live wires plus one ground, coming out from the guitar), plus the jack on the side. It's ugly, but and probably a bit noisier than the final installation should be, but it works for testing. I just realized that the 4 wires won't be enough for two coil split humbuckers plus the piezo pickup, but will think about that later.
Guitar top sanded down for refinishing

In the meantime, the parts still being on their way, I decided that I'm not ok with the finishing of the top, so I still have time to re-finish it. So I sanded off everything from the top to re-do it from scratch.

I also took the time to do some headstock styling, meaning two headstock logos, one at the top, where usually the brand goes, and another one in the middle of the headstock, where usually the model name is shown. I also have an idea for the trussrod cover, but that isn't ready yet.
The top one, the strange character is the Japanese (and seemingly also the Chinese) character for "sound", "noise", "reverberation" and "echo". It clearly describes everything I want to do with a guitar, thus the choice. It is read as Hibiki (and it's not related the whiskey, the top result you'll probably do a search for it).
Headstock with logos
The middle logo is a double Penrose triangle, originally drawn by Swedish artist Oscar Reutersvärd in 1934, but made popular in 1950s by a psychiatrist and a matematician (Penrose father and son) describing it as "impossibility in it's purest form".
As for the method I made it: create the logo using open-source products (important), print it using a laserjet, put some transparent packaging tape over it. Cut the logo as close to the borders as possible, then put the whole thing in water for about eight hours, then clean the paper from the packaging tape, leaving only the logo on it. Then simply tape the whole thing to the guitar. It's an easy and elegant way to create removable, but good-looking logos.

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