| Also known as | 99-1252 |
| Diagram | Fig. 20 — TAIL LAMP AND SUPPORT · ref 11 |
| Subsystem | electrical |
| Listed in parts books | 1973–1974 |
Stop—Tail Lamp—L917 (99-4252)
Lucas L917 stop/tail lamp assembly for the rear fender, PN 56513 (earlier alias 99-1252).
This is the Lucas L917 stop/tail lamp, the round-lens unit that shows up on Triumph rear fenders in the catalog under PN 56513, with the earlier alias 99-1252 turning up in the same figures. It's the complete rear light assembly Ed's catalog lists under Tail Lamp and Support and Fenders and Tail Lamp figures, so it's the unit that mounts to the rear fender and tail section and does the stop/tail signaling for the back of the bike.
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If your parts book still lists 99-1252, that's the same physical lamp under its older number — don't let the different digits throw you off when you're cross-checking against what's actually on the bike.
Catalog appearances put this lamp in the 1973-1974 window across the fender and tail lamp figures. Beyond that we don't have more detail on it in our records, so if you're not sure the L917 is what's currently on your fender, give the shop a call and we'll confirm before you order.
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