Antennae Interference

[AleroDrime]

For a long time i thought my cruddy radio signal was the result of where i cut the coaxil cable up by the passenger floorwell, but today i did a proper connection with peiced from radioshack and was still having lots of static.
So i started pulling things apart and playing with them and found that if i turn off the amp, the radio signal is perfect.

Some how I have interference with the radio signal when my amp and subs are on. (I'm sure it involves my amp and subs because the signal is flawless when i turn the switch to my remote wire off.)

Right now Im frustrated from pulling the seats out to relocate those wires towards the center of the car. And I'm wondering if anyone else has any issues with their amp or wires intefering with radio signal.

I also think that the bass could be disturbing the end of the antenna cable, but i have no clue where the Inline Antenna ends?

Any imput guys?

[2004alero]

im pretty sure the antennae ends on rear widnow passenger side.

[widbyj]

Yes, the antenna cable runs back along the passenger side of the body, either to a standard antenna in the quarter panel or wires embedded in the rear window (look like defroster). Power for subs needs to be run along the drivers side to prevent interference. RCA cables for the sub amp, if used, should run along the passenger side also. Note that even with all this you may get electronic interference from the amp circuits themselves, but not too likely. If you have a big amp a cap may help.

[AleroDrime]

the power for the subs is ran down the drivers side, so thats no the issue, and running the rca, bass knob and remote wire are now underneath the passenger seat, all under the carped, nice and clean

maybe somthing there is loose and the bass is rattleing it??

[a4d2a0m]

Did you connect your antenna booster??

[AleroDrime]

yes its connected to a 12v source, the signal is flawless untill the amps and subs are turned on, then it goes to crap

[AleroDrime]

bump

[Silentalero]

is the Rca and antenna running through any control modules? GM's are notorious for throwing interference if you cross the path of any control module (ecu, airbag, ect).

Also is it interference or engine whine?

[AleroDrime]

its static in the radio, and no theres nothing its crossing

[Silentalero]

Do you know the difference between static and engine whine? I wanna rule that out

[AleroDrime]

yes, im sure its not engine whine because theres no issue when the subs and amp are off

[Silentalero]

OK, then I can tell ya now its something with a wire, where does the antenna wire go?

[Ryan from Ohio]

To clarify its just an amp for a sub, not interior speakers?

How is the remote turn on for the antenna wired up exactly.

[AleroDrime]

I think i just stuck the remote wire for the antenna to the 12volt source i powered the headunit from, a fuse tap on the sunroof fuse. Soldered

Yes its the amp for the subs, and the switch to turn things on and off is on the REM wire, with things off the radio's back at original strength and quality

It's a good amount of base back there, its all down to 1ohm now with my two 10's and they hit clean and hard. If its not wire inteference, maybe the bass is disturbing the end of where ever the antennae line is, the bass has popped the rear deck up twice

[Silentalero]

Ok hands down your bass is not effecting the antenna. Its a wiring issue. Do you have an aftermarket radio?

[Ryan from Ohio]

Originally Posted by AleroDrime

I think i just stuck the remote wire for the antenna to the 12volt source i powered the headunit from, a fuse tap on the sunroof fuse. Soldered

Ok heres the deal.

Your HU probably has two sets of outputs for "remotes". One for "remote antenna" and one for "remote amplifiers" like most units have.

The big issue is getting 12V to the antenna in the rear.

I see you mention a 12V source which you powered the HU from, which leads me to believe you cut the connector off.

At any rate, you need to find the correct wire which leads to the antenna and have a 12V switched source to it. This can be accomplished off the HU or by any other 12V switched source. Your pick.

Dark green wire...

Radio 12v orange + radio harness
Radio Ground black/white - radio harness
Radio Ignition (Class 2 Data)
Radio Illumination brown + radio harness
Factory Amp Turn-on
Power Antenna dk. green + radio harness
LF Speaker +/- tan - gray +,- radio harness
Notes: If equipped, the amplifier is in the driver side on the trunk.
RF Speaker +/- lt. green - dk. green +,- radio harness
LR Speaker +/- brown - yellow +,- radio harness
RR Speaker +/- dk. blue - lt. blue +,- radio harness

[AleroDrime]

Ryan I was wrong in my first post and we have discussed this b4, i do believe the power source is connected to the dark green wire, but of course I will check this weekend.

The reason i think the bass or amp is involved, is because the radio signal has no static the moment the subs are off and the static returns the moment the subs begin to hit again.

This weekend im also gonna experiment and see if the issue continues with the amp on but the subs disconnected.

[cherrington17]

...which means it has something to do with the WIRING going to the sub amplifier...

subs CAN NOT affect radio signal reception.

[AleroDrime]

If the wiring to a receiver is lose, i believe it could, which one of the things on the window is for the antennae

I'm not wanting to argue, I'm asking for help, I've done about a dozen installs for friends and its only my car that ever has issues

[Ryan from Ohio]

Ok while on you only have static when the subs thump?

Earlier you said when the subs were on, meaning the amp was powered on and in use.

If in fact there is distortion only when the subs hit then I would think you have a loose connection/bad connection. Could be the solder joint or on the module behind the plastic panel @ c pillar.