AAMP of America PXDX-KI - Manual (Page 14)

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voltmeter. With the key OFF and the negative test lead of the voltmeter firmly touching a
bare metal chassis part of your car, begin probing the wires in the main radio harness with
the positive test lead. The constant 12V+ circuit should read a continuous 12 volts or higher.
Once you’ve identified the constant 12V+ circuit, strip back about 1/8” of the insulation. Now
take the positive test lead and insert it into the wire stranding so that you can now probe for a
suitable ground location in the dash cavity using the negative test lead. Bare chassis metal
is the recommended ground spot. The voltmeter will read a constant 12 volts or higher when
you have found a good ground point. Attach the BLACK ground wire to this spot with either
an existing bolt or screw or use a metal piercing screw. You also have the option of splicing
into the ground wire in the main radio harness. Probe the remaining wires with the negative
test lead until you again find a circuit that reads a constant 12 volts on the voltmeter. When
you’ve found a circuit that reads constant 12 volts, turn the dash light dimmer control to make
sure you have not probed the illumination dimmer circuit. If the circuit continues to read a
constant 12 volts or higher regardless of the dimmer position, you have found the ground
wire. If not, continue testing until you do. Some vehicles do not have a ground wire in their
main radio harness and instead ground through their mounting brackets to the dash. In these
cases, you will have to ground the black wire to the bare metal chassis inside the dash . Once
the ground wire is connected, please finish your wiring connections by splicing in the external
YELLOW wire from the vehicle specific harness.
Vehicle Specific Harnesses that require wiring connections:
PXHFD1 – connect the Yellow wire to constant 12V+ & connect the Black wire to ground.
PXHFD2 – connect the Yellow wire to constant 12V+ & connect the Black wire to ground.
PXHFD3 – connect the Yellow wire to constant 12V+ & connect the Black wire to ground.
PXHGM3 – connect the Yellow wire to constant 12V+ & connect the Black wire to ground.
PXHVW2 – connect both the Black and Black/White wires to ground.
2.4 Installation at the CD Changer Location
In this section you will learn how to install the Audio2car in the factory CD changer location. If your
vehicle is equipped with a factory CD changer you will need to disconnect it from the factory pre-run
harness in order to connect the Audio2car interface. If your vehicle is not equipped with a factory
CD changer, you will need to locate the factory pre-run harness. This may involve the removal of
the; center console, glove box, or carpeted side panels in the trunk. Please consult your vehicle’s
dealership or a local car audio professional for instruction or assistance with locating the factory CD
changer connection if necessary.
1. Connect your vehicle specific Harness to the factory pre-run CD changer harness in the ve-
hicle.
2. Make any necessary wiring connections on your vehicle specific harness. Please see section 2.3
for details on making these wiring connections.
3. Now that the interface is connected to the radio, you will need to test the operation of the inter-
face before permanently running the RCA cables or 3.5mm headphone cable or re-assembling the
dash. First, connect the white Mobile Device cable to the Mobile Device. The Mobile Device should
indicate that it is being charged. Turn on the factory radio and press the button that would activate
the factory CD changer to select the Mobile Device. It may take up to three minutes for the interface
to initialize to the radio (this only happens the very first time you select the Mobile Device). Once
the Mobile Device has been selected, press Play on the Mobile Device. You should be able to hear
the music on your Mobile Device through your factory radio. With the operation of the interface
confirmed, you may continue with the installation. If you experience difficulties in operation, please
see our troubleshooting chart in section 3.2.
4. Decide on a convenient location to mount your Mobile Device.
5. Run the black docking cable from the interface to the desired mounting location. Use caution to
not cut, pinch, or crimp the cable during this step. Avoid moving parts, vehicle wiring harnesses and
areas of excessive heat when routing the cable.
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