[RABarrett]

There are two wires supplying power to these units, on for high, one for low on the beams, and a ground. If both are dim, the ground is likely the problem. If you cannot find the ground by tracing the wiring, make a new ground by extending the wire and grounding it somewhere yourself. If only the low beam is affected, you might try locating the wire supplying voltage to it and check it for problems. At worst, you have the good light to use for comparison. Ray