X10's XCam wiring diagrams
These images are from an XCam2 and every one that I've examined so far is color coded the same.

Technical note: It makes things easier for Vidroc assembly if you put a plug between the camera and the transmitter. Seeing as how there are two ground wires, you can solder them together (the 2 and 3 wires) and use a 4 prong plug.