Need help with infrared flashlight, please take a look

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I bought a infrared flashlight ( ICO-P is marked ) with 5 wire jack, but i don't know how to get it to work, the man that i bought it from says it needs 4-5 volts to work, but he don't know how to wire it. I did disassemble it and found a board inside, three wires from the board are going to jack, the white wire from the jack is screwed to the case and the fifth jack pin is empty. Here are some pictures of it.

i think that this ir flashlight was on some vehicle, now i want to get it to work for my camera.
Please help me to get this thing working, thanks in advance.