Mercury 150 EFI Service Manual page 395

POWERHEAD
12. Reconnect water pressure sensor (GRAY) hose and speedometer pressure sensor
(BLACK) hose.
Page 4A-78
b
c
a - Water Pressure Sensor
b - Speedometer Pressure Sensor
c - Speedometer Sensor Hose (BLACK)(for Digital Gauges)
d - Water Pressure Sensor Hose (GRAY)(for Digital Gauges)
a
d
58773
90-883728 JULY 2001