83-2150
Here are some suggestions:
Deutsch - DT Series Housing & Wedgelocks
56 Series Terminals
Deutsch - DTM Series Housing and Wedgelocks
Vinyl Step Down Butt Connectors
Nylon Ring Terminals
Quick Splice Self Stripping Connectors
Closed-End Shrink Butt Connectors
Quick-Splice Self-Stripping Adapters
Heat Shrink & Solder Splice Connectors