Note: Replacement bulbs are H-4, three-prong style. We suggest P/N 2134, 2144, 2142, or 2222, or universal 55/60 watt H-4 bulb. 4-1/2" Passing lamps use 35 watt H-3 bulbs.
Use of high power (100w) bulbs is NOT recommended & will void warranty.
H-D: No modifications are required for most Models, but some Electra Glides & Road Kings require enlarging the hole in the stock backing plate with tin snips, and bikes with shallow headlight buckets may require minor wiring mods using the supplied connectors.