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Wiring
Power and Outputs
Ground Terminal ( GND )
Remote terminal ( REM )
Use only two 25 ampere ATC
blade type fuses.
4
Power terminal ( +12V)
Connect the fuse holder as close to the vehicle
battery + as possible, using AWG 5 = 16 mm
2
or
heavier cable. Use ring crimp terminal cable to
connect to battery +. Apply silicon grease to the
fuse to prevent corrosion.
Use a 50 Amp fuse.
Connect the battery cable from the fuse holder to
the +12 Volt terminal on the amplifier.
Be sure to use a rubber grommet or a plastic
insulating tube where the cable passes the firewall
or other places when it can easily be jammed.
Use ty-wraps to secure to existing cables in the
engine compartment.
DLS FH1
fuse holder
Connect to a good chassis ground. The ground
connection should be clean, unpainted metal to
provide a good electrical connection. Use a wire
brush, a scraper or a piece of an abrasive sheet to
clean the metal. Use a lock washer or two to secure
contact. Protect with silicon grease or by paint
applied afterwards.
Power
(Green)
Protect
(Red)
Power Light / Protect light
The power light (green ) comes on when
the amplifier is turned on.
The protect light ( red ) comes on
when the amplifier shuts down from
overheating, or a short circuit ( spea-
ker failure)
Fuses
For RCA cable signal input:
Set the input selector switch to position ”Low level”.
Connect the radio power antenna lead = remote
turn on/off from the car stereo to the amplifier
remote connection. This turns on the amplifier
whenever the car stereo is turned on.
You can either use the built in remote cable in the
RCA cable itself or use a separate cable as seen
on page 4.
Sometimes a small disturbance may enter the
amplifier coming from the remote voltage , through
the built in remote wire and into the RCA cable.
Thus we recommend to use a separate remote wire
and run the RCA lead separate from remote wire,
power cables and speaker cables.
Insert the cable directly into the amplifier terminal.
If there is no remote voltage available from the ste-
reo, you must connect to the ignition key through
the radio or any accessories fuse.
For High Level input:
Set the input selector switch to position ”High level”.
We recommend you to connect the remote wire as
described above. The amplifier will produce soft
on / soft off operation this way. If you use a remote
wire, set the switch ”High level auto start” to posi-
tion OUT.
In the case that there is no remote voltage available
from the car stereo, or you want to simplify the in-
stallation, the amplifier can be turned on/ turned
off by the high level input voltage. This is done
when the ”High level auto start” switch is set to IN
- position.
RA20 & RA40
DLS
Connect with ring
terminal to
battery + terminal
Connect with ring
terminal to
chassis ground
Connect to head
unit remote start
terminal or power
antenna lead
4


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