Mighty Mule FM350 - Manual (Page 23)

19 rev 07.16.12
Step 2
Place the 12 Volt automotive or marine type battery and
its weatherproof case within 6 feet of the fence post
where the opener arm is mounted.
Step 3
Attach the 10 foot battery harness wires provided to the
terminals of the battery. Take care to attach the BLACK
wire to the NEGATIVE terminal and the RED wire to
the POSITIVE terminal. Reverse connection will cause
damage to the control board.
Step 1
With the opener mounted in the upside down
position remove the Control Board Access Panel
on the bottom of the opener arm.
ON/OFF
ON/OFF
Control Board Access Cover
Control Board
Battery Harness
Connector
Receiver Wires
ON/OFF Switch
Step 4
IMPORTANT: Make sure the power switch on the
opener arm is in the OFF position.
Run the plug end of the Wire Harness wire up to
the opener arm and plug it into the battery harness
connector coming from the control board.
ON/OFF
ON/OFF
Battery Harness Connector
10 foot Harness
From Battery
0 2
RED to POSITIVE BLACK to NEGATIVE
Battery Harness
Connector
0 2
10 Foot
Power Cable
CONNECTING THE BATTERY