Battery Connection - Mercury motorguide R3-30 Manual

WIRING AND BATTERY INFORMATION

Battery Connection

Disconnecting or connecting the battery cables in the incorrect order
can cause injury from electrical shock or can damage the electrical
system. Always disconnect the negative (‑) battery cable first and
connect it last.
12-VOLT BATTERY CONNECTION
1. Install a 50 amp manual reset circuit breaker in line with the trolling
motor power cable positive (+) lead and the battery positive (+)
terminal. Connect the trolling motor positive lead to the trolling
motor battery positive (+) terminal.
2. Connect the black trolling motor power cable negative (–) lead to
the trolling motor battery negative (–) terminal.
3. Connect a common ground bond from the trolling motor battery
negative (–) terminal to the engine starting battery negative (–)
terminal.
a
b
Recommended MotorGuide Accessory Description
50 amp manual reset breaker
!
c
f
CAUTION
e
d
45086
11
a - Power cables to
trolling motor
b - 50 amp manual
reset circuit breaker
c - Trolling motor
battery
d - Engine starting
battery
e - Power cables to
engine
f - Common ground
bond
Part Number
MM5870