| Diagram | Fig. 33 — HEADLAMP, WIRING HARNESS, SWITCHES AND TAIL LAMP · ref 43 |
| Subsystem | electrical |
| Listed in parts books | 1966–1968, 1970–1972 |
Stop and tail lamp, type L679
Lucas type 679 "beehive" stop and tail lamp, appearing in Triumph parts books from 1966 to 1972.
This is the Lucas type 679 stop and tail lamp, the round "beehive" style unit that shows up in Triumph parts books across a run of headlamp/wiring harness/switches and tail lamp figures as well as fender figures. It's an electrical part, so it lives at the back of the bike doing exactly what a tail lamp does: running light plus brake light in one housing.
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The catalog places this lamp across appearances from 1966 to 1972, including on TR6R and T120R listings, so it turns up in a good number of parts book entries over that span for whichever machines those books cover. If you're trying to match a lamp on a bike outside that window, check your own parts book rather than assume this is the one.
Lucas is the correct maker here — this is a genuine electrical component, not a mechanical part mistagged. If you're replacing one, it's worth checking the mounting and wiring against what's already on the bike before you order, since tail lamp fitments varied enough across British bikes of this era that a look at your existing setup saves a return trip to the counter.
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