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Circular crimp tool.

EFI Wiring Fundamentals

Relevant Module: Practical Tools and Wiring Harness Construction Skills > Crimping

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Discussion and questions related to the course Motorsport Wiring Fundamentals

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Some open barrel crimps use a strain relief crimp that uses a circular crimp around the wire insulation or wire seal. I have an Engineer brand crimp tool for open barrel crimps that has changeable dies. I have all dies available. I also have a ratcheting Klein crimp tool and have the open barrel dies for it. My problem is, non of these tools have the circular dies for performing these round crimps. I cannot find a crimp tool specifically for these round crimps. I would think that someone would make a specific tool for these crimps so general purpose tools could be used. I cannot find anything. I really don't want to go buy all new crimp tools for specific connectors, terminals. Do any of you know if there is a tool? If not, is there a way to perform these crimps without a specific crimp tool?

Hey Jason,

To give you a better answer, could you let me know a part number for one of the terminals you need to crimp?

The Aptiv/Delphi Micro 0.64 terminals, same as Molex MX123. These are the pins used in 2005 GTO LS2, E40 ECM. I also have some mini fuse holders that look like Metri-Pack 280 / GM Weatherpack connectors. Basically with a fuse that installs in one end of the connector instead of another connector half. RaceSpec https://racespeconline.com/products/sealed-mini-fuse-kit. The crimp around the silicone seal looks like it would need to be round, not F crimp "B" shape.

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