Recent content by Jonas84

Il sure, used ground to the round outer shield on rca, positive to the pointy part. Checked them multiple times. Check the output? That would be the one to the speakers. That gives good signal. As for maybe damaged the amp i dont think so since if i plug the signal to a external source and...

I took the wires from the oem harness, so the oem amp is not plugged in. So signal from headuint is spliced to rca.

Would this work? https://www.conrad.com/p/dynavox-gli-21-stereo-ground-loop-isolator-line-isolator-1461949

Just tried removing ground from the rca and suddenly no noise, exept if i raise the bas on amp "gainer?" a little pop when shut ting of system. Would a ground loop noise isolator do the trick or do i need to take out head unit and make another ground?

Well i tried straight to chassi,the negative under hood for jumpstart, aswell the one going to neg on car battery. I even tried the ground from the oem wire to oem amp. How is it possible the stock amp works with same input/cable. And yes i buy it that headunit may use a another earth...

So in my bmw there is a little oem amp in the trunk that drives the oem subwoofers under driver and passenger seat. Decided to use a amp i know works lying around. Spliced the input wires to rca and hooked all up and used a separate battery to test out. Played Great. So i went on with...