help tapping the factory stereo in an escalade with an audiocontrol

[JoeGibs 10+ year member]

i'm doing an install in my friend's 08 escalade esv. i bought an audiocontrol lc6i, and am trying to wire it into the factory subwoofer. i'm leaving the factory sub connected and running, so no potential issues in tapping its signal.

the factory sub in this vehicle is IN the dash, buried int he dash. we started to take it apart, and took off a trim piece on the center console. under that, we found a bunch of wiring harnesses, so i disconnected one and sure shit it was the subwoofer. so i connected a wire to each of those wires by using a razor to shave off the coating, and soldered onto it. there were 4 wires. two were mostly white, one with a red stripe and one with a green stripe. then there was a red wire, and a green wire. each wire when tested with the dmm gave me the exact same reading (cant remember what it was).

we got that tapped, and continued on with the rest of the install. after getting everything everything else done and hooked up, we got no sound. my immediate finger pointing went to the wires i tapped into. the audiocontrol turns on, so it's remote in is working, and it also turns on the subwoofer amplifier, so its remote out is working. with all of the settings maxed, i get zero response from the subs.

does anyone have any idea what these 4 wires may have been? i seriously did not want anything to do with taking that dash apart, so i didnt investigate any further. i'm now guessing that the 4 wires i tapped were signal wires going to the sub amp. i had assumed the amplifier under the center console arm rest was the sub amp, but may be not. if i DID tap signal wires going to the factory sub amp, shouldnt the audiocontrol still be able to use that?

i do have a regular line out converter that i'm going to try tomorrow night when my friend comes back to town. any ideas would be a huge help. save me from tearing the dash apart un-necessarily.

Click to read more...

 

[JoeGibs 10+ year member]

anyone? any ideas would be sweet

 

[fasfocus00 5,000+ posts]

the audiocontrol unit you have is a summing LOC and can only use speaker wire not signal wire.

 

[JoeGibs 10+ year member]

ok so we tore deeper into the dash and got the subwoofer enclosure out. it turns out the 4 wires i tapped into yesterday are speaker wires, the factory sub is a dual voice coil. so now, i find out i had everything connected properly, and it didnt work. I disconnected the audiocontrol and hooked in a PAC line out converter, and it magically worked. think thats weird? well, i re-connected the audiocontrol, and suuuuure shit, it worked this time. whats even weirder, i dont have anything going into the line in, but it still turns on and off with the vehicle.

electrical gremlins.

all i know is the two AA havoc 15's and the Audioque 2200 make plenty of noise.