Dim lights? Worn out wires or just old eyes, sometimes it's hard to tell. Start by replacing those existing headlight bulb pigtails with new ones and say good-bye to corrosion, erosion, etc. H.D. plastic plug with color coded wires makes these about the best quality there is for this item and that should brighten up your day! Heavy duty 3 prong head light pigtail / connector, each. 60-0401