Description
This a OE Lucas Bulb that is 4 watts (12 Volt) that is used on the MGB Map Light 1963 to 1971. This bulb has the correct shaped glass to for correctly in the Map Light housing. Other companies use a bulb with a larger glass that heats up too much and shortens the life of the bulb. Cross Reference 170-100, JLM9589, GLB233
