I found some electrical connectors online that looked like they would work pretty well for 4x4 applications. They are an insulated crimp connector with solder built in. Once you crimp the wires ...

Crimp connectors provide an easy and convenient way to connect electronics while still allowing for them to be removed and swapped without having to reach for a soldering iron and desoldering wick.

Standard cable lengths rarely match the actual requirements for wall runs. You end up with bunched-up excess cable creating ugly tangles behind your equipment. Making my own meant I could measure each ...