| Diagram | Fig. 21 — FRONT BRAKE · ref 43 |
| Subsystem | brakes |
| Listed in parts books | 1979–1980, 1983 |
Brake switch Lucas 2SH34619
Lucas-made front brake light switch, Triumph PN 60-7155, later superseded by 06-1934.
This is a front brake light switch listed under Triumph part number 60-7155, appearing in the FRONT BRAKE section of the parts books for the 1979 to 1983 span. It carries a Lucas type number, 2SH34619, since Lucas made the electrical switchgear for these bikes even though the part is cataloged under the Triumph number.
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The switch works with the front brake lever assembly to trigger the stop lamp when the front brake is applied. It's a small but important safety item, and one that owners often replace when it stops making contact reliably or when the plunger sticks.
Our records show this part was superseded by a later factory number, 06-1934. If your parts book or an old invoice lists 60-7155, that's the same physical switch under its earlier catalog number - worth knowing if you're trying to match up a replacement or track down NOS stock.
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