Zapco Z-150.2 SP Owner's Manual - page 8
6
Planning your power connections
The power end plates of the Zapco SP amplifiers carry the power connections
and the speaker connections and vary somewhat by the number of channels.
For example, the power end of the Z-150.6 SP below has (of course) speaker
connections for six channels. One model, the Z-150.2 SP has on-board fuses, while
all other models will require and in-line fuse with a rating as in the specifications
page at the end of this manual. That said, the main 12-volt power input, the 12-
volt turn-on wire, and the main Ground connections are common to all models.
• The gold connection at the interior of the end plate is the main power
input. This must be connected the vehicle battery's positive (+) terminal,
and a main system fuse should be placed close to the battery.
• The silver connection at the outside of the end plate is the main ground
or negative connection. This must be securely attached to bare metal at
the vehicle frame, or other heavy chassis component with a direct
connection to the frame.
Note: Seat bolts and seat belt bolts are NOT good ground points
• The small terminal between the main power and ground is the +12
turn-on input and can be connected to the head unit turn-on output wire.
If none is available it can be connected to an accessory (ACC) terminal.
You should avoid using any ignition-on (IGN) wire, as they can be noisy.
Note: The Z-Series SP amplifiers have terminals that do not require connectors. You simply
insert a bare portion of wire and tighten the connection with the supplied Hex tool. As the wire
conforms to the connector the connection can loosen. You should re-tighten the connection
after about a week.
Turn-on trigger wire
+12 volt at Battery positive terminal Ground to chassis