Amp voltage drops when remote wire turned on.

[Sully255]

I am having an issue with my amp when the remote wire is turned on. Before I turn on the remote wire ( turning on stereo) I have 11.2 volts on the amp and the remote wire and positive on amp. As soon as I turn on the stereo the positive and remote wire voltage drops to 2.x I believe it is the head unit. Can someone confirm my theory?

Thank you.

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[dragon.breath 10+ year member]

The head unit would not cause the battery voltage to drop. Sounds more like a bad connection somewhere. My first check would be the amplifier ground.

 

[shredder2]

Before I turn on the remote wire ( turning on stereo) I have 11.2 volts on the amp and the remote wire and positive on amp.

11.2 resting voltage on a 12v battery? Is that what the battery itself is reading?

 

[Sully255]

11.2 resting voltage on a 12v battery? Is that what the battery itself is reading?

Yes that is resting voltage.

 

[Sully255]

The head unit would not cause the battery voltage to drop. Sounds more like a bad connection somewhere. My first check would be the amplifier ground.

The positive and ground on the amp resting is also 11.2. It only drops when I turn on the head unit.

 

[AnthonyO 10+ year member]

Have the battery tested. Sounds like a bad battery