In theory, it may be possible to retrofit an engine kill switch from a BS6 Unicorn to a BS4 Unicorn, but it would require modifications and may not be a straightforward process. Here are a few things to consider:
Compatibility: Firstly, you would need to ensure that the engine kill switch from the BS6 Unicorn is compatible with the wiring and electrical system of the BS4 Unicorn. The connectors, wiring harness, and control module may differ between the two models.
Electrical Modifications: Retrofitting an engine kill switch would involve making electrical connections and modifications to the existing wiring system. You would need to identify the appropriate wiring connections and integrate the new switch into the circuit.
Mounting and Aesthetics: You would also need to consider the physical mounting of the engine kill switch on the handlebars or other suitable location. It should be securely mounted and aligned with the other controls for ease of use.
Safety and Warranty Considerations: It's important to note that modifying the electrical system or making any aftermarket changes to the motorcycle may impact the safety and warranty of the vehicle. It is advisable to consult with a professional mechanic or authorized service center to ensure that the modification is done correctly and does not compromise the safety or warranty of the motorcycle.
Overall, retrofitting an engine kill switch from a BS6 Unicorn to a BS4 Unicorn is a customization project that would require technical expertise and an understanding of the electrical system of both models. It's recommended to consult with a qualified technician or authorized service center to assess the feasibility and safety of such a modification.