[Polizeiposaune]

The WAGO connectors typically used in home wiring have a transparent plastic shell which lets you see whether the wire made it all the way through the spring clip. The ones shown in the NTSB video had an opaque shell around the spring clip.

[ocdtrekkie]

I think my attempt at humor butthurt a lot of WAGO fans. I used "seriously though" after in my actual... serious comment.