| Also known as | 188378 |
| Diagram | Fig. 17 — NACELLE HEADLAMP AND SWITCHES · ref 21 |
| Subsystem | electrical |
| Listed in parts books | 1964–1966 |
Bulb (4W.M.C.C)
A small 4-watt bulb (Lucas 222, also listed as 188378) used in the nacelle headlamp and switch assembly.
This is a small 4-watt bulb, catalog number 222 (also shown as 188378 in some listings), that lives inside the nacelle assembly up front where the headlamp and switches are housed. It's a Lucas electrical item, not a mechanical part, and it shows up in the parts books tied to the NACELLE, HEADLAMP AND SWITCHES figures across catalog entries running 1964 to 1966.
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A bulb this size in that location is typically doing pilot light or warning light duty rather than serving as the main headlamp bulb, but our record doesn't spell out which exact lamp it fills, so don't assume without checking against your own nacelle wiring.
If you're chasing this by either number, 222 or 188378, they're the same part in our records. Give us a call if you want to confirm which socket in the nacelle it's meant for before you order.
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