Mercury Freshwater Manual page 19

Bow plugs: For temporary trolling motor installations, MotorGuide
recommends the use of a quality plug designed for marine
applications.
Connect the red battery lead to the battery positive (+) post and the
black battery lead to the battery negative (–) post. Install a 50 amp
circuit breaker in line with the positive lead, as shown.
d
eng
WIRING AND BATTERY
BLK
c
b
a
12 volt battery hookup
a - Power cable
b - 50 amp manual reset circuit
breaker
c - Jumper wire
d - Common ground
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