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GROUND
The wire used for ground should be of the same gauge as the power wire. Just make sure that you choose a different color (generally black) so that you don't reverse
the polarity at the amplifier terminals. Follow the rules below for connecting the ground wire properly:
1. Avoid using seat bolts, seatbelt bolts, and fender wells for ground.
2. Choose a metal area close to the amplifier that appears to be a good of ground, such as the floor.
3. Investigate the area you wish to use for electrical wires, vacuum lines, and brake or fuel lines.
Please note that if you are installing multiple high power amplifiers into the vehicle, you must upgrade the ground strap from the battery to the frame and the frame
to the body.
POWER WIRE & FUSE
The proper wire size is very important for an amplifier capable of these power levels. The following are the recommended fuse values and wire gauge for lengths up to
20ft.
Model Wire Fuse
BMF1000D 4awg. 100amp
BMF600D 8awg. 60amp
POWER
Power wire needs be connected directly to the battery using the wire requirements listed above. Never use the fuse box or any other wire as a source for the power for
an amplifier. Before you start, choose the easiest path to run the wire from the battery to the amplifier. Generally, try to keep the power wire on the driver's side of the
vehicle (See Signal Inputs & Outputs for explanation). Use the following rules for running the power cable through the vehicle:
1. Use grommets when passing the power wire through any metal wall of the vehicle.
2. Avoid sharp corners or sharp body parts that may easily cut through the insulation on the wire.
3. Avoid running the power wire over engine components and near heater cores.
4. Avoid the gas, brake and clutch pedals and their mechanisms.
5. Use an inline fuse to eliminate the risk of a fire caused by a short in your power wire.
6. Connect the fuse holder as close to the battery positive as possible.
Once the wire has been run, connect the wire to the battery terminal. As a precaution, leave the fuse out until all other wire connections are made.
Directions:
1. Find a nut and bolt to fit the ring terminal you have chosen.
2. Drill a hole just large enough for the bolt to fit through at the source of ground.
3. Use either a wire brush or sandpaper to eliminate unwanted paint around the hole you have drilled as to supply a better contact for your ground.
4. Terminate the ground wire to the ring terminal and attach it to the bare metal using the nut and bolt. It is very important for this connection to be solid.
5. Spread silicon over the screw and bare metal to prevent rust and possible water leaks.
REMOTE TURN-ON
In between the power and ground of the amplifier is a remote turn-on terminal. This terminal must be connected to a switched +12 volt source to make the amplifier
operational. Typically, remote turn-on leads are provided at the head unit that will turn on and off the amplifier in correspondence with the source. This means you
will most likely have to remove the head unit from the dash to find the source +12V output wire.
Once the head unit is pulled from the dash, locate the remote turn on wire. The majority of vehicles will be using an after market head unit when using an amplifier.
These after market head units generally use a blue or a blue with white wire as the remote turn on for the amplifiers. However, when using a factory radio, the power
antenna wire should be as a turn on lead if applicable (colors will vary from make/model). Only if a lead is not available at the source, a switched +12 volt supply, such
as a toggle switch, should be applied.
Use a minimum of 18-gauge wire, preferably blue, to connect the amplifier to the head unit. If possible, route this wire along side of the power wire using the same
precautions. Connect the remote output of the head unit to the wire using a barrel connector or a mating terminal as required by the source unit. You can solder
these wires together, but be sure to use heat-shrink over the connection. Do not place the radio back into the dash yet.
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