The most reasonably priced component used on the Gl1500c Valkyrie 1999 (x) Switzerland Grip Heater Custom's is the Bracket Sw.
In this schematic the "Cap. Grip Heater" is used most often.
This Grip Heater Custom's diagram displays the required parts for the Gl1500c Valkyrie 1999 (x) Switzerland Grip Heater Custom's.
