No sound when engine is on

[dhart295]

The set up is with 3 Wet Sounds Amps and 2 Tower speakers with 6 JL Audio speakers. Everything has been working flawlessly with it until a month ago. When the engine is off and the key is in the ON or ACC position the stereo system comes on and everything works great. When I start the engine, 90% of the time no sounds comes on (Head unit powers on) and it just has engine whine through all the speakers. I have verified all 3 batteries are charged and had them all tested. I have also check all battery connections to ensure the are tight. The volt gauge on the dash fluctuates between 13.5 and 14 volts. I can usually get the stereo system to work when the engine is on by turning the head unit on and off a few times but not always. Any initial thoughts on what could be going on or any next steps?

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[Louisiana_CRX 5,000+ posts]

The set up is with 3 Wet Sounds Amps and 2 Tower speakers with 6 JL Audio speakers. Everything has been working flawlessly with it until a month ago. When the engine is off and the key is in the ON or ACC position the stereo system comes on and everything works great. When I start the engine, 90% of the time no sounds comes on (Head unit powers on) and it just has engine whine through all the speakers. I have verified all 3 batteries are charged and had them all tested. I have also check all battery connections to ensure the are tight. The volt gauge on the dash fluctuates between 13.5 and 14 volts. I can usually get the stereo system to work when the engine is on by turning the head unit on and off a few times but not always. Any initial thoughts on what could be going on or any next steps?

Is head unit a Pioneer?

 

[dhart295]

Is head unit a Pioneer?

No. Rockford Fosgate