We had those terminals by the roll at FCA. The connector hard shell may have a number stamped into it. That can be used to look up the proper terminal. We used U shaped splice clips.

https://www.newark.com/amp-te-connectivity/485043-1/terminal-open-barrel-splice-crimp/dp/33B9065?gclid=EAIaIQobChMIuMCv_dLW9AIVQfbjBx1PSQvsEAQYAiABEgLKPPD_BwE&mckv=s95bbt2s8_dc|pcrid|434136793404|plid||kword||match||slid||product|33B9065|pgrid|100464450466|ptaid|pla-985509465520|&CMP=KNC-GUSA-GEN-Shopping-NewStructure-Connectors

When used with this style w crimp tool the crimp is no bigger than the wire itself.

https://www.amazon.com/Qibaok-Ratcheting-0-5-1-5mm%C2%B2-Connectors-Terminals/dp/B07RZSSTSJ/ref=asc_df_B07RZSSTSJ/?tag=hyprod-20&linkCode=df0&hvadid=366281307321&hvpos=&hvnetw=g&hvrand=10762719042515110981&hvpone

Doug