| Diagram | Fig. 18 — HEADLAMP, SPEEDOMETER, TACHOMETER · ref 11 |
| Subsystem | electrical |
| Listed in parts books | 1971–1972 |
Switch, lighting (99-1211)
A Lucas-numbered lighting switch (also listed as 99-1211) from the early-70s headlamp and electrical equipment catalog sections.
Part number 31276 is a lighting switch, listed in the catalog under the Lucas alias 99-1211. It shows up in the headlamp and electrical equipment sections of the parts books, so it's part of the switchgear that controls the lights rather than anything in the ignition or charging side of the system.
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Catalog appearances for this one run 1971 to 1972, which tells us where it sits in the parts books but not which specific model it was fitted to beyond that. If you're chasing down a lighting switch for a bike from that era, this is a part worth checking against your existing switch before you order, since headlamp and turn switches changed around in this period.
If you've got the older 99-1211 number written in your parts book, that's the same physical switch as 31276 — just the earlier catalog form of the number.
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