Why amp won’t turn off when a car is off?
There are a few possible explanations for why your car amp continues to stay on or draw power when the car is turned off. One explanation is that the remote wire was not properly connected. This wire is in charge of telling the amp when to switch on and off. Another reason may be a defective or bad amp.
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When you remove the key from the ignition, a car amplifier should turn off. If it continues to be powered on even when the engine and stereo are turned off, you will have a dead battery very soon. There are several possible reasons why your car amp stays on when the car is off. In this post, I will go through some of those reasons and then provide the fix for these problems.
Bad Ground Connection
When power supplies are not properly grounded, they can cause a variety of issues, including your amp drawing power even when it is turned off. If you suspect this is the problem, inspect the ground wire to see if it is loose or needs to be changed.
Another likelihood is that your amp is defective and must be replaced. If you’ve ruled out all other possibilities, it’s good to check if the amp is working properly. Simply unplug the remote and turn on the stereo normally. If it continues to draw power after being turned off, the amp may have failed.
How to Fix Car Amp Stays On When Car Is Off
If you’ve ascertained that the problem is with either the remote wire or the ground wire, the solution is straightforward.
First, ensure that the remote wire is hooked up correctly. If not, reconnect it and see if that resolves the issue. If the remote wire is already appropriately hooked up or rejoining it does not help, the next step is to inspect the ground wire. If the ground wire is loose, fasten it or, if needed, replace it.
The surface to which the ground wire is attached also has a significant impact on the quality of the ground connection. Attach the ground wire to a gleaming bare metal surface. If everything appears to be in order, but the amplifier continues to draw power when the vehicle is switched off, the amp may need to be replaced.