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Step 13 - Connect remote (Blue) wire to 12-volt switched accessory. To turn on the amplifier unit, a
switched 12-volt signal is required. Locate a 12-volt wire that is active when the vehicle key is on and
connect the blue remote wire to it. This may be found in the fuse panel, key-switch or radio harness.
Speaker Wires
Step 14 - You can find the factory speaker wires on the driver side of the truck under the threshold
trim removed in Step 3. The wire colors for the left channel are; tan / yellow (positive) and gray / light
blue (negative). The wire colors for the right channel are; orange / red (positive) and brown / pink
(negative). Tap into wires and route over to passenger side threshold and to pre-amp of enclosure.
Connect to the supplied High Level input harness wires and plug into the matching port on the
pre-amp.
Although, MTX has made every effort to assure proper wiring colors, MTX is not responsible for any
changes made by the vehicle manufacturer which sometime occur. If wiring colors do not match then
physical verification is required.
Connection to Enclosure
Conventional Wiring of Factory Radio
Red Power Wire
Conventional Wiring of Aftermarket Radio
Red Power Wire
20 Amp Fuse
_
+
Optional EBC
(Electronic Bass Control)
Black Ground Wire
Attach Ground Wire Directly to
Vehicle Frame After Clearing
Area of Debris and Paint
20 Amp Fuse
_
+
Optional EBC
(Electronic Bass Control)
Black Ground Wire
Attach Ground Wire Directly to
Vehicle Frame After Clearing
Area of Debris and Paint
M T X . C O M
Source Unit
Blue Turn On Lead
12V Switched Source
Green (-)
Gray / Light Blue (-)
Green / White (+)
Tan / Yellow (+)
Gray (-)
Brown / Pink (-)
Gray / White (+)
Orange / Red (+)
Source Unit with
RCA Outputs
Blue Turn On Lead
RCA Interconnects
7
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