Crimping tool?

This one for AMP connectors pictured above but note of two options you want this one https://www.amazon.com/Connector-Crimping-Knoweasy-Ratcheting-0-03-0-52mm%C2%B2/dp/B08G8CQBL8?th=1&psc=1#video-immersive-view_1671064053992

Called Powerpole in Amazon referral above

Change the pin type, to something better. Otherwise use cheap crimp and solder it to get good contact. This is the spec for a very good crimp short of using a swaging tool. MIL-DTL-22520 link to example

@audio-union ,

That is a very impressive crimper. Thanks for posting this.

Bob

Ideally, you want a tool that has jaws shaped like this.

They are shaped to roll the crimp and strain-relief then punch them down to 'bite' the wire. This is very difficult to do correctly with normal crimper or needle-nose pliers, etc. (almost impossible with soft copper/brass/silver/gold connectors).

Not the only tool available that will do the job, but one that will crimp correctly...