Aftermarket head unit installed, rear speakers don't work

[99_Yukon]

So I installed my new head unit and my rear door speakers don't work. The cargo area ones in the roof are still on as are the fronts. Any ideas what I did wrong?

 

[juggjiggler69]

Thats funny when i did mine my doors worked and not the cargo ones i had to run new wires to my doors and still havent got to run wire to the cargo ones

Sent from my Galaxy Nexus using Xparent Red Tapatalk 2

 

[99_Yukon]

Thats funny when i did mine my doors worked and not the cargo ones i had to run new wires to my doors and still havent got to run wire to the cargo ones

Sent from my Galaxy Nexus using Xparent Red Tapatalk 2

Why did you have to run new wires to the doors?

 

[knoslf]

Not sure about this but i was told that the factory amp(if u have one) powers the rear door speakers, may need to bypass the amp but like i said, I am not 100% sure, someone told me that.

 

[SunlitComet]

use radio amp control wire to attach to pink wire from dash to trigger amp for rear doors.

 

[juggjiggler69]

All of my wires in the dash r hooked up and i still had no sound from rear so i just ran new wires i dont even think mine has a pink wire in the dash

Sent from my Galaxy Nexus using Xparent Red Tapatalk 2

 

[99_Yukon]

use radio amp control wire to attach to pink wire from dash to trigger amp for rear doors.

Thanks I'll try that. Where is the "amp" at in the truck?

 

[the big blue bus]

under the drivres seat. its tiny bout size of hand. i ran a wire from the orange plug i think in it to the remote on back of headunit. mine was werid. it would work in tunner mode but not ipod so i run ran a wire to trigger the amp been working fine

 

[SunlitComet]

you have to trigger it using the pink wire in dash that activates relay for the amp. if you feed you HU control wire to amp it will not work. At least not without damaging you HU or amp.

 

[99_Yukon]

you have to trigger it using the pink wire in dash that activates relay for the amp. if you feed you HU control wire to amp it will not work. At least not without damaging you HU or amp.

So I can just wire the pink wire for the amp relay to the acc wire to turn it on?