Tools and material needed
Tools:
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Flat and Phillips screwdrivers
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Wire cutter
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Wire stripper
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Electric drill with drills
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Crimping tool
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Digital multimeter or test lamp
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Wire brush, scraper or a piece
of an abrasive sheet to remove
paint for a good ground connection
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Grease to protect the ground
connection from oxidation
Material:
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Speaker wire: minimum
12 AWG = 4 mm
2
for subwoofers
13 – 16 AWG = 1,5-2,5 mm
2
for other
speakers
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Sheet metal screws for mounting the
amplifier to the amplifier board and the
amplifier board to the car + some extra
for fuse holder, amplifier ground etc.
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Electrical insulation tape
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½ inch thick plywood or particle board for
the amplifier to be mounted upon.
Amplifier installation kit:
If available,buy an amplifier installation kit. It
contains normally all you need. This is what you
have to buy if you buy the items separately
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20- 25 feet = 6- 7.5 meter power cable,
min AWG 5 = 16 mm
2
or heavier.
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20 feet of AWG 15 = 1,5 mm
2
wire for
remote turn on / off cable from radio.
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RCA-cable for input from radio.
- 20 feet or 5 meter for trunk installations
-12 feet or 2 – 3 meter for under seat
installations
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Four to eight splicers to connect speaker
cables to high level input cable, if high level
input is used.
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Wire ties
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Insulating grommet or insulating tube
Stereo
head unit
3
Professional Tip:
If amplifier installation kits are available with
different size of power cable, chose the most
heavy power cable to improve sound quality and
to allow more amplifiers to be installed now or
later. The amplifier power terminals accept AWG 4
cables directly, so If possible buy AWG 4 = 21
mm
2
cable for best performance (RM20 only
AWG5, 16 mm
2
).
Both the positive wire and the ground wire must
have the same size. To avoid cable fire, be sure
not to oversize the main fuse value for the power
wires.
THE DC-FEED
Maximum main fuse values for different cable
sizes.
6 mm
2
(9 AWG) :
25 A
10 mm
2
(7AWG) :
40 A
16 mm
2
(5AWG) :
60 A
21 mm
2
(4AWG) :
100 A
33 mm
2
(2AWG) :
150 A
42 mm
2
(1AWG) :
200 A
Routing wires