Aftermarket Stereo Installation
Covers:
- 1989-1992 2.2L 4-Cylinder Engine
- 1989-1992 2.2L 4-Cylinder Turbo Engine
- 1990-1992 3.0L V-6 Engine
Step 3: Working With The Factory Amplifier (If equipped)
Overview
The
premium sound system package that was offered with the Probe included an amplifier
that delivered 20-watts per channel. It is located under the front passenger
seat. Normally, installation kits will include a wiring harness that is used
to bypass the factory amplifier. This, however, is unnecessary unless you are
worried about loss of sound quality.
Option
1: Using The Amplifier
If
you'd prefer to use the factory amplifier with your new receiver, you'll need
to do a little extra wiring. Ford's premium sound receivers use a 12-volt signal
to let the amplifier know when to turn on. Without this signal, the amplifier
will remain off and no audio will be sent to the speakers.
NOTE: This procedure will also supply the required 12v signal to the subwoofer
amplifier, if available.
- Find
the white wire on the main radio connector. Be sure it's the main connector
from the radio and not the speaker connector.
Main Radio Connector
- Connect
the white wire to the new stereo unit's amplifier trigger wire. If one is
not available, connect it to the blue/white wire (main power).
- Return
to Step 2 to complete the stereo installation.
Option 2: Bypassing The Amplifier
If you'd prefer to bypass the factory amplifier, you can buy a 6" bypass
harness for it at most car audio shops. If you don't have one, you can manually
bypass it.
- Push
the front passenger side seat all the way forward. Remove the plastic screw
tabs from the two covers at the rear of the front seat tracks and remove the
covers.
- Remove
the three 14mm bolts and one 14mm nut from the front passenger seat. Disconnect
any wires from the bottom and remove the seat from the vehicle.
- Locate
the premium sound amplifier. Disconnect the Stereo-to-Amplifier connector
from the left side of the amplifier and the Amplifier-to-Speakers connector
from the right side.
- Remove
the three 10mm mounting bolts from the amplifier and remove the amplifier
from the vehicle. It will no longer be needed.
- Cut
the connectors end off both the wiring harnesses and connect the wires as
shown below.
| Wire Function |
Stereo Unit
To Amplifier |
Amplifier
To Speakers |
| Left Front (+) |
Blue/Orange |
Black |
| Left Front (-) |
Blue/Black |
White |
| Left Rear (+) |
Green/Orange |
Green |
| Left Rear (-) |
Green/Red |
Yellow |
| Right Front (+) |
Blue |
Blue |
| Right Front (-) |
Blue/Green |
Brown |
| Right Rear (+) |
Green/Blue |
Red |
| Right Rear (-) |
Green |
Grey |
- When
the connections are complete, make sure the wiring harness is secured so it
won't catch on the bottom of the seat.
- Reinstall
the passenger seat.
- If
your Probe has the factory subwoofer, you will need to either rewire it or
bypass it as well. Proceed to Step 4 for instructions.
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