I have made a box for electrical installation for signal cables and 12V systems. You can use it on an existing system and doesnt need to cut the cables. Just add the appropriate parts of the size of cables. I also added the possibility to fasten the cables in the box.

This box is a size of L=80, W=50, H=28 mm.  (there is also a higher version available, look for my other drawings)

Box:

• PETG
• Perimeter of your choice
• 15% infill

Small parts:

• Print them standing
• Support for printplate
• No Brim needed
• The smallest parts with biggest holes, just print them one by one. Risk of  loosen!