| Also known as | MC128PB |
| Diagram | Fig. 29 — T90 AND T100SS HEADLAMP, WIRING HARNESS AND SWITCHES · ref 15 |
| Subsystem | electrical |
| Listed in parts books | 1965 |
HARNESS,CLOTH 1965/6 12V
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This is the main wiring harness listed under PN 54936415, described in the catalog as a cloth-covered harness for 1965/6 12-volt models. It's the central nervous system of the bike's electrics, the bundle that ties the headlamp, ammeter, switches, coil, and lighting circuits together so you're not hunting down a rat's nest of loose wire and splices.
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The cloth covering is period-correct for the mid-60s Triumph twins this harness was built for, a step up in look from the later PVC-wrapped harnesses that came in as production moved on. If you're doing a numbers-matching restoration or just want the bike to look right under the tank and behind the headlamp shell, having the correct-style harness matters more than people think.
We don't have a lot of extra detail on file for this specific listing beyond the catalog description, so give us a call before you order to confirm it matches what your bike needs — wiring harnesses vary by year and by which switches and gauges your particular bike carries, and getting the wrong one means a lot of rework.
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