Bombardier SeaDoo 1998 factory shop manual, Page 253Get this manual
Section 08 ELECTRICAL SYSTEM Subsection 05 (INSTRUMENTS AND ACCESSORIES)
Tachometer
GTX Limited
Bombardier
F07H04A
The PURPLE wire is the 12 Vdc power source of the tachometerThe BLACK wire is the groundThe GRAY wire is the pulse signal from the multipurpose electronic module (MPEM)