[projectRDM]

It's five wires. If you've ever read an FSM (you haven't, or you wouldn't be asking this), or if you'd done a search on here (again you haven't, because I've answered this before), you'd know that.

Green, green/white, and green/black are the data wires for TX, RX, and CLK. Those match color to color on the ECU. Black wire is ground, and the remaining wire (varies in color by model) is ignition.