Lamco 1-din Gauges

[Akane]

Anyone know anything about lamco gauges? The suzuki that I bought came with these gauges, there is volt, boost and temp gauge, the temp gauge was not working so I had a look at it today.

The plug looks like a PC Floppy disk drive's power plug, but it has 5 holes, but only 3 wires are present. 1 for power, 1 for light and 1 for ground. That might be the reason why it's not working - no signal wires.

Anyone know how I should go about on hooking a sensor up and get an extra wire or 2 to the plug to get it working? The gauges does look mighty cool (white face with red lettering) and it'll be a shame not to have them all functioning. Thanks.