26 | Installation — Wiring
AUXILIARY BATTERY CABLE CONNECTION
Ensure there are no connections to the negative (–) terminal of your auxiliary battery before making
any connections.
Mount a MIDI/MEGA fuse close to the auxiliary battery (no more than 150 mm (6") in cable length) (1).
Then, connect the auxiliary battery cable from the Main Unit to one end of the fuse, ensuring that the cable
length is no more than 2 m (6.6') (2).
Connect a cable to the other end of the fuse and to the positive (+) terminal of the auxiliary battery (3).
Auxiliary
Battery
BMS12050 — 60A
BMS12075 — 100A
BMS12100 —125A
< 150 mm (6")
1
3
2
BATTERY MONITOR CONNECTIONS
NOTICE:
Apply the correct torque to the Terminal Bolts on the Battery Monitor. Over‑torquing bolts may damage
the terminals.
DO NOT bottom‑out the thread when fastening Terminal Bolts into the terminal, this may cause a poor
electrical connection.
IMPORTANT: Only connect the Battery Sense Lead once ALL other wiring is complete.
GROUND (GND) CABLE CONNECTION
Remove the M10 Bolt and washers from the Ground (GND ) terminal (1). Then align the lug stud hole with
the terminal and fasten using the at washer, spring washer and bolt (2). Torque to 20 N·m (14.7 lbf·ft).
Connect the Ground cable to a point that forms a common ground with all components in your setup (3).
This can be achieved by connecting all grounds to a common ground busbar or by a good quality connection
to the vehicle chassis (if appropriate).
1
2
20N·m ±10%
14.7lbf·ft ±10%
Common Ground Busbar
3
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