Mercury V8 300

Key Position Continuity should be indicated at the following points:
Accessories A C
Run A D
Start
A F
F D
A D
Key Switch Test (Three Position)
a - Pin A
b - Pin B
c - Pin C
d - Pin D
e - Pin E
f - Pin F
Ref. No. Pin Wire Color Description
a A Red 12 volts
b B Black Ground
c, d C, D Purple Run
e E Black/yellow Off
f F Yellow/red Start
Meter Test Leads
Key Position Reading (Ω)
Red Black
Pin B Pin E Off Continuity
Pin A Pin F
Run Continuity
Pin A Pin C, D
Pin A Pin F
Start
Continuity
Pin F Pin C, D Continuity
Pin A Pin C, D Continuity
b
c
d
e
f
a
18868
Charging and Starting System
Page 6B-14 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018