This piece replaces stryfes original wire guide cover using original mounting holes and screws. The original part was made by foam blast and it uses bigger style voltmeters that mount on surface of the bracket. Also their is quite bad when it comes to wire management. I designed this piece from ground up to accomodate smaller 30V voltmeters that mount inside the bracket (it's a friction fit, but a dab of glue is always a good idea) The wires then enter the wire channel through the hole and usually are long enough so You can hook them up to jam door switch. I also made the part itself shorter so it's a drop in replacement.
I explained the features and showed of the piece in my recent video: https://www.youtube.com/watch?v=F6riULiPSxQ
Cheapest voltmeters I found on aliexpress that fit the bracket: https://bit.ly/2ItO74A
You can easily print the bracket with no supports if Your printer is good at bridging. It may result in not so great surface finish on the bottom of the wire guide, but it's not visible when the part is mounted. I recommend more durable PETG.