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Installation Troubleshooting
Procedure 4: Check Amplifier if you experience excess Engine
Noise.
1. Route all signal carrying wires (RCA, Speaker cables) away from power
and ground wires.
OR
2. Bypass any and all electrical components between the stereo and the
amplifier(s). Connect stereo directly to input of amplifier. If noise goes
away the unit being bypassed is the cause of the noise.
OR
3. Remove existing ground wires for all electrical components. Reground
wires to different locations. Verify that grounding location is clean,
shiny metal free of paint, rust etc.
OR
4. Add secondary ground cable from negative battery terminal to the
chassis metal or engine block of vehicle.
OR
5. Have alternator and battery load tested by your mechanic. Verify good
working order of vehicle electrical system including distributor, spark
plugs, spark plug wires, voltage regulator etc.
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