It should be labeled IOD for Input Output Device. It defers from vehicle to vehicle. It should be one of the fuses though (around 20 amps), not a black relay. Once you find it, unplug it for 5 - 10 minutes then re-insert it. This will reset it and should get the gauges working again, assuming the fuse is the problem.
Saturday, November 8th, 2008 AT 8:03 PM