Hi a have audi A4 b7 with Bose system i got a after Market stereo but there is no audio at all i have only front 2 spakers a subwoofer and amplifier please help me im stuck for so many days
Hey man if you can help i have a wiring harness for my a3 but i cant get the back speakers to work i think the amp is not turning on how do i fix this ?
You need a remote switch feed to the rear amplifier as well as a line out adjuster in the feed to the rear amplifier. These usually come fitted when you buy a dedicated harness rather than try to cobble it together by cutting wires.
So i just installed a Pioneer headunit in mine aswell as a subwoofer in the boot. I got the subwoofer working with just connecting the rca´s and the remote to the blue/white cable from the headunit. Only issue i have is the rear speakers which are not turning on. Do i still need to connect a red wire like in the video for them to work? I just dont get why the amp for the sub turns on but not for the rear speakers..
My aftermarket stereo wont turn on at all when I plugged it in. Do I have to take a seperate wire from the ignition on to the red one from the stereo just like you did? In that case, from where should i connect the new wire? Somewhere in the engine or somewhere else?
I figured it out. I run a wire from the fuse box. But now I have a different problem. The stereo is turning on and everything works, but I get this buzzing/static noise from the rear speakers when the ignition is on even when the stereo is off. Is there any way to fix this? It's pretty annoying.
From the original stereo wiring. Generally the red power wire is the switched ignition live. Best to check with a multimeter though to make sure it is ignition live.
@@johnhinds6308 so I did in this video however I went back and checked again and found the ignition live from the wiring loom and spliced into that instead.
@@johnhinds6308 I just realised that my reply didn’t make much sense. So I’m this video the red switched live came from a fuse in the fuse box however after this video I found the switched live in the original wiring loom and spliced into that instead of running a wire from the fuse box. The switched power wire I then fitted a fuse to that. Hope this helps