this is weird

when i turn my radio up my lights blink everytime the bass hits,,,, i got stock speakers in my car with a alpine 45/4watt headunit.....what could be cuaseing this.... i took it to the shop and they said im not also getting any power to my fuel pump....


?????im lost

You better check all you wire connections to make sure they are all tightly sound and secure. Bad wires or connections under your hood can cause dimming lights and low power to other places in your car.

my guess is its battery/alternator related.

The alternator can't give the head unit the power it wants. It may be dying.