On my othe car, I did the same thing from the outside (shortening the servo wires). You can buy the any style servo connector unassembled (JR/Sanwa/Fut/KO Propo, etc.) and just trim the wire to length, add the pins to the ends of the wire and then insert the pins into the plug body. I did it this way because I thought it was easier than opening the servo case and having to unsolder/solder on the circuitry board-YIKES!