Canon plugs can have internal shorts from one pin to another

 

MS PLUG

LOCKING COLLAR SHORTS

Souriau connectors.

 

 

I think the higher density plugs are more likely for the locking collar to come into contact with an adjacent pin.

 

 

 

 

MS3116F8-4S , F is grommet with clamp, 8 is frame, 4 sockets.

pain in the kazoo Souriu catalog Cata851_IND851CA02ENFR

cross reference checker

pain in the kazoo Amphenol catalog ENG_CD_5745414_C

pain in the kazoo AMPHENOL online configurator https://www.amphenol-aerospace.com/configurator

Never seen this one

https://youtube.com/shorts/x5sw5BqUT8I?si=wJQGCCEay3qp3b-L