Hello! To answer your question, no. There's no more PVC options from US, unless they were to change their minds, but they said awhile back I believe that the cost difference between PVC and metal has decreased so much for them that it just doesn't make sense to do PVC anymore.
As for wiring diagrams and tutorials.... I've seen loads of them over at the TCSS forums (can't link you there due to site rules here, but you can google
) but only a handful here. You can always ask members for tips, tricks, and advice though! And there are some diagrams floating around if you search. Mostly for Obsidian, but there's some for other things as well. ALSO..... I'd suggest shooting an email to
[email protected] and they will likely be MORE than happy to set you up with the info you need to wire up parts from their store in your own hilt.