bobo244 10+ year member
CarAudio.com Elite
Basically what the title says. I changed my main battery under the hood and now I have I terrible alt noise. I have the big 3 done and a second batt in the back.
I replaced the battery and turned the car on and my speakers and subs made extremely loud terrible death noises so I turned off the radio turned around and saw smoke coming out of my sub amp. Wasn't very happy. I unplugged the remote wire for the sub amp and the 2 rear RCA's to the 4 ch. And now the front two speakers play music but have terribly loud alt whine.
Looked under the hood and everything seems fine. From the (+) side on the batter there is a wire going to the (+) post of the alt, another going back to the second battery, and the third is the stock GM wire that feeds the car. From the (-) neg post there is a wire straight to the ground, a wire to the alt's grounding post, and the GM negative wire. (200A HO alt)
Before I changed the battery I had an isolator inline with the wire back to the back, and took it out when I changed the battery because I never used it, that is the ONLY thing that is different. Didn't touch anything NOT under the hood.
It looks like the sub amp is blown, when I hook it up it the red LED comes on and it doesn't power up.
So I want to fix the 4 ch so I have something to listen to then work on the sum amp.
ANY IDEAS???
I replaced the battery and turned the car on and my speakers and subs made extremely loud terrible death noises so I turned off the radio turned around and saw smoke coming out of my sub amp. Wasn't very happy. I unplugged the remote wire for the sub amp and the 2 rear RCA's to the 4 ch. And now the front two speakers play music but have terribly loud alt whine.
Looked under the hood and everything seems fine. From the (+) side on the batter there is a wire going to the (+) post of the alt, another going back to the second battery, and the third is the stock GM wire that feeds the car. From the (-) neg post there is a wire straight to the ground, a wire to the alt's grounding post, and the GM negative wire. (200A HO alt)
Before I changed the battery I had an isolator inline with the wire back to the back, and took it out when I changed the battery because I never used it, that is the ONLY thing that is different. Didn't touch anything NOT under the hood.
It looks like the sub amp is blown, when I hook it up it the red LED comes on and it doesn't power up.
So I want to fix the 4 ch so I have something to listen to then work on the sum amp.
ANY IDEAS???