2004 Poalaris MSX110, MSX150 PWC Original Service Manual, Page 140Get this manual
FUEL INJECTIONIGNITIONEXHAUST SYSTEMS Electronic Throttle Body Circuit
ECU 300 (Black)
C1 TPS Supply Voltage B1 Ground Reference H1 Throttle Valve Negative Terminal
G1 Throttle Valve Positive Terminal B4 Throttle Position