2005 Ski-Doo RT Series Shop Manual, Page 139Get this manual
Section 04 ENGINE MANAGEMENT (SDI) Subsection 01 (OVERVIEW)
The tether cord cap contains magnet and ROM chipThe magnet actually closes the reed switch inside the post which is the equivalent of mechanical ONOFF switchThe chip has unique digital codeNOTE: Actually, it is the memory of the ECM which is programmed to recognize the digital code of the tether cord capThis is achieved with the VCK (Vehicle Communication Kit) (PN 529 035 981)Refer to their operation manual or help system to program tether cord cap
529 035 981