How to remove engine interference in newly installed amplifier?
I just installed an amp to my toyota truck, and once i start the engine, there's an annoying whine coming through the speakers. Also as i accelerate the truck, it can be heard on the speakers also… Its so annoying. I got my RCAs running from the HU to the amp and then wires from the amp to the speakers. By googling online i have read that it could be a bad ground on the amplifier, but i ran a cable straight from the battery to the amp (-ve) and it still soundad really bad. I thought it could be the RCAs… So i plugged an RCA from my iphone to the amp( i obiously removed it from the HU) and it worked fine! But just with these cable form my iphone to the amp… I tried other RCA cables ( which are really long) on the HU and the engine interference was still there. So i'm thinking it could be that the RCA are really cheap? I bought the amp installation kit on ebay for $15… Please help me hear my music in my truck! Any one has any possible solution to this?
Sounds like the noise is from the head unit, check power connections on it.
look for alternative power source points, and multiple ground connections, you could have a ground loop feedback.
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