This product has been discontinued by the manufacture. Please see RJ-12 Conversion Kit for your specific product.
The conversion kit replaces everything from the pedal input jack at the Thrustmaster base to the connector on the hand control unit and should solve any intermittent, or complete, loss off signal issues cause by failing wires or plugs.
The original coiled cord product was a “WORKMAN EX6 6 PIN CB RADIO MIKE MICROPHONE EXTENSION CORD CABLE” with one end replaced with a common RC-Type 4-pin connector. The most common failure with this cable is at the round chrome connector. In some cases these can be repaired by removing the tiny Philips screw on the shield, pulling the shield back, and identifying/repairing any broken wires at the solder points.