Mercury 150 - Page 70

OUTBOARD INSTALLATION
64
BATTERY CABLE CONNECTIONS
Single Outboard
(+)
(-)
a
b
c
or86
a - Red sleeve - positive (+)
b - Black sleeve - negative (–)
c - Cranking battery
Dual Outboards
Connect a common ground cable (wire size same as engine battery cables) between negative (–)
terminals on starting batteries.
(-)
(-)
a
a
b
b
c
d
d
or87
a - Red sleeve - positive (+)
b - Black sleeve - negative (–)
c - Ground cable
d - Cranking battery