2012 Camry. Odd noise with headlights off.

[oldAlpine]

I bought a 2012 Camry that has a Pioneer head unit and wiring for a sub, but no sub was included. I put in a simple box with a basic JBL amp. Works fine except when the headlights are off but the marker lamps are on, and then I get a weird hum/buzz through the sub. It's loud enough to be heard over the engine noise.

I looked at the wiring, and it has power and ground wires all the way to the battery (fused). This happens when car is running or not, and I can only hear noise from the subs when it happens.

Any idea why this would happen?

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[Doxquzme Premium Member]

Disconnect the RCA's or hi-level input to the JBl amp. turn the system on, If the noise continues, it's a ground or noise issue with the amp.If it stops, you know it is coming from the signal up line somewhere.

 

[1point21gigawatts]

It’s your amps ground. Ground it better. Change spot. Cleaned new spot well with sandpaper. Then bolt down. Don’t setscrew or anything half step.

 

[dragon.breath 10+ year member]

The OP hasn’t logged in here since January.

 

[AnthonyO 10+ year member]

In before the goat

 

[1point21gigawatts]

The OP hasn’t logged in here since January.

The OP still has the original problem and is fixing it NOW. Mr. Goat? #Greatest

 

[1point21gigawatts]

In before the goat

Check you britches after that ride.