The ProTek RC Servo Lead & Terminal Crimping Tool is the tool you need to make custom length signal wires for your ESCs, receiver batteries and servos. This tool safely secures the connector pins on wire sizes between 14 and 28awg, without damaging the pin or the wire. Simply strip a short length of the shielding off the wires, install the connector pin into the tool, insert the wire into the pin, and squeeze the tool to crimp the pin in place.
NOTE: When changing the length of your signal wires or receiver battery connectors, for the best results we recommend you use new connectors.
The instructions on the back of the box are essentially useless. I had to search online to find a decent how-to video. (See below). Also the instructions seem to say that the crimp tightness is adjustable via the +/- dial on one side of the pliers. I still haven't figured out how to move that dial and actually adjust the crimp.
Suggestion #1: Watch this video FIRST! https://www.youtube.com/watch?v=tyJAFQQf9fo. I was pretty frustrated with this tool and about to give up until I did a little Google'ing and found the aforementioned video. After following the video's instructions, looking closely at the tool, and noticing the staggering of the socket I was able to finally get a nice good crimp without damaging the wire or leads.
Suggestion #2: PRACTICE BEFORE DAMAGING YOUR SERVO'S WIRING! Buy some spare servo wire, several extra sets of leads and practice, practice, practice.