Single wire, self grounding bulb holder for screw-in type bulbs. This is for your dash lights, with a single wire hook up. Each Bugeye has four, one to illuminate each gauge. See the additional photos for fitting style of this product in an example gauge.
Note: Use these screw in bulbs with this holder.
Note: your ignition light and high beam lights plug into the tach and speedo, these require two wire sockets.