Martin, thank you for reply. My cam also comes with a cable like your. But it seems to be broken. The "Video" and "Gnd" pins in my photo are connected to the yellow end of the cable. That's why I know. But the corresponding pins marked "?" in my photo don't link to any where at the other end of the cable. Obviously one is 12V and other is gnd. But I don't know which is which. Before I connect them at the wrong polarity (which likely will demage the cam) would you please check your cable and let me know? Thanks in advance.