Dual Outboards
Connect a common ground cable (wire size same as engine battery cables)
between negative (–) terminals on starting batteries.
a -
Red sleeve ‑ positive (+)
b -
Black sleeve ‑ negative (–)
c -
Ground cable
d -
Cranking battery
(-)
(-)
a
a
b
b
c
d
d
15497
OUTBOARD INSTALLATION
138
eng