I have been getting popping sounds from my speakers when ever I press the brakes , use power windows power locks, air conditioning and turn signals. I have grounded my head unit to a steel tube behind the dash (nissan frontier) that I polished with a wire wheel. I grounded the amp with a copper grounding terminal with the ground wire soldered in it. I attached the grounding terminal to a polished spot on floor of the truck with a bolt.
Have had this problem for years and have been using head phones to listen to music from my phone instead. But the time has come where I need music for passengers as well as me. I have 4 speakers one in each door and a sub in a box. It did work fine at one point but not sure what happened. I have messed with it alot trying to fix it and nothing has helped. I read online that it is called accesory pop. I installed a new amp that was doing the same thing and then stopped working. I just ordered another amp to try to get it working. How can I fix this and get my system working again?
