why does my car amp fuse keep blowing?

I have a 240 watt car amp and every time i put my ground wire in the fuse blows and the only other thing i have hooked up is my power no speakers or remote just the ground and power can someone please help me?

Answer:

I think because your ground wire is cross, get a cheap meter and check the ground wire is right, when you buy it they will tell you how to check, and its easy

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Okay your wire is way to small for that much power. You need at least 2 gauge wire from the battery back for that much power. I have one amp running 600 watts and i have 4 gauge wire running back to the amp. The best thing to do it replace all of the 8 gauge wire with something much bigger and try that. I would use 4 gauge. Many times the wire gets too hot and blows the fuses which saves you and your car from possible fire. Also check in you amps manual and see what size fuse/s it should take and make sure that you have the correct one/s installed in the amp itself and also the fuse inline from the battery. hope this helps.

You either have a short somewhere, or you're pushing too much juice through. Make sure that you aren't causing a ground loop somewhere in your wiring, and that all of your wiring contact points are clean and secure. Also, I hope you're disconnecting the battery anytime you're working on any electrical wiring in your car? Doesn't matter if the car is off, the battery still contains an electrical charge, ready to blow whatever component you try to hotwire into a live wire; remember, this is (DC) direct current. I'm assuming the fuse blows as soon as you reconnect the battery after running and terminating the wiring down. If this is not the case, next time disconnect the battery, complete the amp power/ground connections, replace the fuse, and then re-connect the battery. If it still blows you have a short somewhere, most likely being a bad grounding point, or a grounding loop.