Yamaha F150B Service Manual page 454

Ignition unit
a
Fuse (50A) (engine battery)
b
Fuse (50A) (house battery)
c
Fuse (20A) (engine ECM, ISC, fuel injector, high-pressure fuel pump, ignition coil, YDIS)
d
Fuse (20A) (engine start switch, PTT switch)
e
Fuse (30A) (starter motor relay)
f
Main relay
A
To 10-pin main harness
B
To gauge
TIP:
Depending on the outboard motor, the location of the coupler terminal may be changed
as indicated in the table below.
Terminal No. Color
(*1) 6 through 18 (except 8) Red/Yellow
19 through 21 Red
A-5