Getting Feedback.

[PreludeDrew]

alright i may not be able to describe the situation as best as possible but here goes. I'm getting some bad feedback when i shut off my stock deck, or turn the ignition off and open my door (GM vehicles keep the radio on for a short period or until a door opens) when this happens i get a loud (for lack of a better term)BZZZZZZZ depending on what i have the gain turned up to.

I wired my amp power correctly, the amp to the speakers correctly.. and i'm using my stock deck in my blazer. i tapped the R rear and L rear speakers to my IEC AULOC Output converter. then from there I split the right and left into two RCA jacks and the two L's go on the 2 L's on the amp (its a 4 channel amp) and the two R's on the two rights on the amp (i did this to achieve bridging 4 channels into 2. the amp i have is a Blaupunkt Special GTA-4.

Any help would be greatly appreciated. Thanks

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[NX2000DET 10+ year member]

where did you tap in to get the amp turn on wire?

 

[PreludeDrew]

the power antenna lead.. the GM stock decks don't have a wire for it on the end of the wire harness, but it's still on the unit itself

 

[NX2000DET 10+ year member]

the power antenna lead.. the GM stock decks don't have a wire for it on the end of the wire harness, but it's still on the unit itself

so you still have the stock HU?

Did you tap the power ant lead behind the radio or in the trunk?

If your still with the stock HU then i suggest moving it to the fuse box. you'll need a volt meter to check them but find a fuse thats only on with the ignition and not attached to anything high current but if possible add it to the fuse thats for the radio(if it turns off with the ignition)