I'm still in the process of building my first custom lightsaber myself, so don't believe everything I say
![Cheesy](http://saberforum.com/Smileys/default/cheesy.gif)
But I think I can help you a little bit.
1. If you look hard enough (well not really), you will find many sufficient wiring schematics, instructions, and guides on both TCSS and Ultrasabers for installing electronics in a lightsaber. Just takes a little bit of research in both forums. But do take the time to read, installing electronics isn't exactly the easiest thing to do, especially if you have sound.
2. Most of the electronics sold here on Ultrasabers appear to be Ultrasabers's take on many of TCSS's parts, and since those are obviously designed to be in sabers, Ultra's work too. The most important thing to look for is info such as inner diameter, outer diameter, etc.
3. The Obsidian sound fonts were originally designed by Novastar (please excuse my mention of the name) which are compatible with the newly-unlocked Petit Crouton. But please somebody affirm or disprove my assumption, I'm not 100% on this either.
Good luck and MTFBWY
P.S. Nice looking saber so far! I like the shroud
![Grin](http://saberforum.com/Smileys/default/grin.gif)