well basically you have to take out the whole gauges cluster, remove clear plastic sheild, remove black gauge trim and then cover old gauges with new gauges. Reassemble the gauge cluster. connect the three wires comin from the gauges to the wires comin from the black box. On the other side of the black box there will be a power and a ground wire which you can splice sum headlight wires, run it thru amp power wire, etc.. and you should be good to go...