Owner's Manual

2
OEM Input Connections
Designed to retain OEM fader functionality, the FiX™ 86 accepts full-range or
band-limited factory outputs (up to 3-way front + 2-way rear) from an OEM
audio source (250 mV – 30 V RMS). Engineered to combat induced cable noise,
the input architecture is set up in a differential-balanced configuration, making
these inputs compatible with virtually any analog audio signal. Connections are
made via four plugs located on the side of the unit labeled “OEM Analog Inputs”.
Each 4-pin plug accepts two channels of audio input, separated in pairs
(Left and Right).
Depending on the specific architecture of your OEM system, you will need to
locate suitable connection points to provide appropriate input signals to the
FiX™ 86, while maintaining OEM fader functionality. It is recommended to obtain
a service manual for the vehicle you are working on to locate and identify the
correct OEM wires. Refer to the table below when making connections with your
OEM audio source. Note: With most factory audio systems, it is not necessary
to connect all eight input channels of the FiX™ 86. We recommend using
the least amount of inputs needed to create a full-range audio signal, while
retaining your fader’s functionality.
Plug Connection Description
1/2
(Front
Inputs)
L+
Ch. 1
input
(+) Positive Left Channel Signal
Connect to OEM front
full-range or front
mid-woofer signals.
(Ch. 1 is the monitored
channel for the auto
turn-on circuitry.)
L– (–) Negative Left Channel Signal
R+
Ch. 2
input
(+) Positive Right Channel Signal
R– (–) Negative Right Channel Signal
3/4
(Front
Inputs)
L+
Ch. 3
input
(+) Positive Left Channel Signal
Connect to OEM front
tweeter signals.
L– (–) Negative Left Channel Signal
R+
Ch. 4
input
(+) Positive Right Channel Signal
R– (–) Negative Right Channel Signal
5/6
(Rear
Inputs)
L+
Ch. 5
input
(+) Positive Left Channel Signal
Connect to OEM rear
speaker signals.
L– (–) Negative Left Channel Signal
R+
Ch. 6
input
(+) Positive Right Channel Signal
R– (–) Negative Right Channel Signal
7/8
(Sub
Inputs)
L+
Ch. 7
input
(+) Positive Left Channel Signal
Connect to OEM sub-
woofer signal.
(If mono (one ch. only),
connect it to both the
left and right channels,
in parallel.)
L– (–) Negative Left Channel Signal
R+
Ch. 8
input
(+) Positive Right Channel Signal
R– (–) Negative Right Channel Signal
It is very easy to damage expensive vehicle systems in modern automobiles.
Never assume that you have found appropriate wires without consulting
a reliable wiring diagram or without performing signal testing with safe
test equipment. If you are uncomfortable with reading diagrams or testing
signals, please enlist the services of your authorized JL Audio dealer to
perform the installation.