Product Description
The 0202SN Wiring Harness is the primary electrical loom for the carbureted (BS3) generation of the Thunderbird 350. Unlike the standard Bullet or Classic harnesses, this unit is tailored to accommodate the Thunderbird’s unique Twin-Pod Instrument Cluster, specialized projector headlamp wiring, and the specific routing required for the cruiser-style frame.
As a high-performance aftermarket part from Swiss, it features heavy-duty copper cores and specialized insulation that prevents “voltage drop,” which is a common cause of weak sparking or slow self-starts in older UCE engines. The harness is fully color-coded to match the original factory wiring, making it a reliable choice for mechanics and DIY enthusiasts looking to resolve persistent electrical glitches.
Key Features:
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Thunderbird Specific: Includes the extended wiring and unique couplers required for the digital/analog console and rear LED tail lamp assembly.
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Electric Start (ES) Optimized: Features reinforced, high-current gauge wires for the battery-to-starter relay circuit to ensure consistent cranking power.
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DEUS Series Durability: Enhanced protective sleeving offers superior resistance against engine heat, oil spills, and friction-induced wear.
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Anti-Corrosion Terminals: All coupler pins are treated with a protective coating to prevent moisture-induced oxidation (green crust).
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Direct Plug-and-Play: Precision-molded connectors ensure a tight, factory-like fit without any need for wire cutting or splicing.
Technical Specifications:
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Part Number: 0202SN
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Brand: Swiss (DEUS Series)
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Emission Standard: BS3 (Carbureted)
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Start Type: Electric Start (ES)
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Ignition Compatibility: TCI (Transistorized Coil Ignition)
Vehicle Compatibility:
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Royal Enfield Thunderbird 350 UCE (BS3) – Models manufactured between 2012 and early 2017.
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Note: This is NOT compatible with the BS4 variants (which require Part No. 0202SQ) or the newer Meteor 350 models.















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