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Wiring Connections
Make sure that you have a good chassis ground. Good ground
connections will eliminate most electrical noise problems. A
good chassis ground requires a tight connection to the vehi-
cle's metal chassis. The area around the ground connection
should be clean, bare metal without rust, paint, plastic, dust,
or dirt for a good electrical connection.
Speaker Wiring Notes
Follow the above wiring dia-
gram to install the head unit
with new or existing speak-
ers.
• This unit is designed for use
with four (4) speakers with an
impedance between 4 Ohms
to 8 Ohms.
• An impedance load of less
than 4 Ohms could damage
the unit.
• Never bridge or combine the
speaker wire outputs. When
not using four speakers, use
electrical tape to tape the
ends of the unused speaker
outputs to prevent a short
circuit.
• Never ground the negative
speaker terminals to chassis
ground.
A
B
1
1
3
3
5
5
7
7
2
2
4
4
6
6
8
8
Connector A
1. Rear right s)/Purple
2.
3. Front right s)/Grey
5. Front left s)/White
Rear right speaker(-)/Purple-Black
4. Front right speaker(-)/Grey-Black
6. Front left speaker(-)/White-Black
7. Rear left s)/Green
8. Rear left speaker(-)/Green-Black
Connector B
1. -
2. -
3. -
4. Battery 12V (+)/Yellow
5. Antenna power/Blue-White
6. -
7. ACC+/Red
8. Ground/Black
Summary of Contents for GM100
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