E30 Sound Setup

[rcsoundn1]

I was trying to make a funny?

[StereoInstaller1]

Yeah, if you have a Pioneer, it's likely that the little Pico fuses in the preamp outputs popped, you may want to swap another deck in to see if that is the case

[potatomash]

Ok so I tried the above. Still got noise when I hit the brake. Where is the best point to ground the head unit?

[potatomash]

Ok so I was playing around with it again today, it seems that when I have either, both Left or both Right RCA's plugged into the head unit only, then I dont get the noise over the tweeters. But as soon as i plug in a left sub or a right front speaker then the noise comes back when I hit the brakes. Pic shown what i mean when there is no noise

Does that narrow it down or does anyone have any ideas what that means?

Garhh this is annoying me

[potatomash]

God dam..what do you know, turns it the black RCA above is just a piece of crap. Rerouted the RCA's down the middle of the car sound was still there, stole a spare RCA that was going into my TV put it in and no annoying noise! I thought the RCA I was buying was "good" too...apparently not..thanks for the help anyways people.

[StereoInstaller1]

Yes, absolutely. Even shit cables can be well shielded, and I would guess those weren't.

Good catch!

Luke