2004 Skidoo ZX Series Service Manual, Page 449Get this manual
Section 09 ELECTRICAL SYSTEM Subsection 04 (BATTERY)
CAUTION: Never solder the wire to the terminalSoldering can change the property of the wire and it can become brittle and breakInstall the protective heat shrink rubber tube (PN 278 001 692) on the terminalHeat the heat shrink rubber tube using the heat gun so that it grasps the wire and the terminalCAUTION: Make sure that the protective heat shrink rubber tube has been properly installed and no part of wire is exposedA32E2SA