| Also known as | C312 |
| Diagram | Fig. 17 — NACELLE HEADLAMP AND SWITCHES · ref 46 |
| Subsystem | electrical |
| Listed in parts books | 1963–1970 |
Double snap connector
A Lucas double snap connector (alias C312) used to join a pair of bullet-type wires in a British bike wiring harness.
This is a Lucas double snap connector, sometimes called by its older reference C312, used in the wiring harness to join a pair of bullet-type wires with one connection instead of two separate single connectors. It shows up across a wide run of Lucas wiring diagrams and figures - nacelle/headlamp switch assemblies, contact breaker and coil circuits, tail lamp and horn wiring, and general electrical equipment plates - which tells you it's a general-purpose harness fitting rather than something tied to one specific spot on the bike.
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If you're rebuilding or repairing a harness and find bullet connectors that need to be joined in pairs (a common setup where two circuits share a junction), this is the piece that does it cleanly instead of you taping or twisting bare bullets together. It's a small item but the kind of thing that's worth having a few of on the bench when you're chasing down old, cracked, or missing connectors on a harness rebuild.
The catalog record shows this connector appearing across a long stretch of Lucas electrical figures from the early-to-mid 1960s into 1970, so it was used broadly rather than on one model year alone. If you're not sure whether your harness calls for the double or a single connector, check your own wiring diagram before ordering.
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