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Discussion Starter · #1 ·
Well as someone who has had the T-harness laying around for some time I finally got around to installing everything. Coming from a BMW as my previous car with the battery in the trunk, lemme tell you this wasn't as easy of a job as I thought. Took me about 6 hours, could probably do it within 3 after doing the first one.

That said, I felt that the documentation/guides on this kind of install either seems to focus on Bose equipped cars and it just focuses on the T-harness location. I hadn't seen any info on firewall access, radio brain location, how to run the wires, etc. Anyways, I'm here with the experience, if anyone has any questions hit me up, I'll reply and try to show pics and info I used.
 

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me and my brother in law are trying to install a t harness and system in his blazer. He has the bone stock stereo ( still has the airplay and all that) but no amp by the foot panels. So we assume that we need to just get the the back of the system or where the brains are and we can’t figure out where that even is or how to access it?
 

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Discussion Starter · #4 ·
me and my brother in law are trying to install a t harness and system in his blazer. He has the bone stock stereo ( still has the airplay and all that) but no amp by the foot panels. So we assume that we need to just get the the back of the system or where the brains are and we can’t figure out where that even is or how to access it?
So for me, I have the stock stereo with airplay. All the videos I could find of the T harness show bose systems with the amp in the middle console down by the floor. For me my stereo's "brain" was on the passenger side floor board (see image where I marked where it's at)
Speedometer Car Vehicle Gear shift White


Another note, I used this website for guidance. The sub fee is kinda high but i just purchased a one day sub on the day I was doing the install. It has factory/dealer level bulletins and shows exactly how to take apart everything in the car. It was invaluable for taking apart the trim pieces and running wires to the back. It's actually how I found where the radio's brain was.
 

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Well as someone who has had the T-harness laying around for some time I finally got around to installing everything. Coming from a BMW as my previous car with the battery in the trunk, lemme tell you this wasn't as easy of a job as I thought. Took me about 6 hours, could probably do it within 3 after doing the first one.

That said, I felt that the documentation/guides on this kind of install either seems to focus on Bose equipped cars and it just focuses on the T-harness location. I hadn't seen any info on firewall access, radio brain location, how to run the wires, etc. Anyways, I'm here with the experience, if anyone has any questions hit me up, I'll reply and try to show pics and info I used.
How did you penetrate the firewall?
Jeff
 

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Discussion Starter · #6 ·
How did you penetrate the firewall?
Jeff
So you have two options, there are two grommets, one on the driver side and one on the passenger side. The one on the driver side has some stuff in front of it so for me I opt'd to go in the passenger side one. See attached pictures to show how i routed it and the grommet itself.

For the grommet you just take off the black tape, leave the grommet on, the tape will just reveal the hole. The hole is filled with rubber sealant, you want to leave that there cause it seals the hole, that's important. What I did was took a metal coat hanger, cut it so i could straighten it out. Then you use that to poke it thru the rubber. On the inside of the car behind the carpet and trim you can clearly see the hole. So I had a friend push the coat hanger thru, then I led it past the pulled back trim. Finally i took the power wire and taped it to the end of the coat hanger in the engine bay, make sure the tape is tight and secure. Then you just get in the car and pull the other end of the coat hanger. Since the coat hanger is smaller diameter than the wire, the rubber sealant will be water tight to the wire.

1. Wire off of battery, into protective wire cover.
Automotive lighting Hood Motor vehicle Automotive tire Automotive design


2. Ran it across the underside of this trip connection point.
Hood Automotive tire Wheel Automotive lighting Trunk


3. And finally drop the wire down and into the grommet. Be sure to retape with some electrical tape after.
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Discussion Starter · #9 ·
Where is the ANC module on the non bose models? LLJ customs is telling me it around be under my center console but it is not. I found something on the passenger side in the trunk but I don't know if that is it.
That looks to be the keyless entry control module (just searched for that brand and number from the picture. OEM 2019 DENSO Chevrolet Camaro SS Keyless Entry Control Module 13518838 for sale online | eBay

I'm afraid I don't think I can help, I don't think mine has an ANC module. Bose stuff is in center console. Mine non bose all of the audio was in the front passenger side under the dash on the right like I mentioned in post #4. My suggestion is poke around in that area? Sorry I couldn't be any more help :(
 

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I have not but now you got me second guessing myself lol. Can you snap a couple pics of the mics?
Here are some pictures of the microphones. I have one above every door (4 total).

Also, can you confirm if your harness colors are turquoise and tan as shown in my 3 attachment. That unit is located by the passenger kick panel as you previously stated. Thanks again for your help btw.
 

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Discussion Starter · #13 ·
Here are some pictures of the microphones. I have one above every door (4 total).

Also, can you confirm if your harness colors are turquoise and tan as shown in my 3 attachment. That unit is located by the passenger kick panel as you previously stated. Thanks again for your help btw.
Wow ok mine has those. So I did some digging and found the site I used last time, repairprocedures.com they have all the service manuals on there. From the looks of it on there the ANC is in the center console down near the floor board. The picture is kinda hard to tell where exactly it is, but i do see the glove box in the top as well as the fuse box, so I think it's down right tucked in in front of the fuse box. It's def in the center console cause the preliminary procedures have you removing the side panels on the center console. I just went ahead and ordered the ANC bypass so once that comes in i'll do the install and can confirm that the box is there. You mentioned that the box wasn't there in yours, what year is yours?


Also just to follow up on your first question, confirmed box in the back is keyless entry module so don't touch that one lol.


This sites expensive but it's a life saver, i got a one day sub for today so if you have anything else that you need me to look up hit me up.
 

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I scrolled back thru some of the pictures I took on my phone and it looks like mine has the box. You can just barely see the silver heat sink fin top (red arrow)
Okay I confirmed that I do not have that amp inside my car. Just to confirm, you connect your turquoise and tan T harness in the unit that behind the passenger kick panel?

Also what is this unit shown in the picture below? It is the same unit that is on the floor on the passenger side of the Center Console. It is in the image you provided of your amp.
 

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Wow ok mine has those. So I did some digging and found the site I used last time, repairprocedures.com they have all the service manuals on there. From the looks of it on there the ANC is in the center console down near the floor board. The picture is kinda hard to tell where exactly it is, but i do see the glove box in the top as well as the fuse box, so I think it's down right tucked in in front of the fuse box. It's def in the center console cause the preliminary procedures have you removing the side panels on the center console. I just went ahead and ordered the ANC bypass so once that comes in i'll do the install and can confirm that the box is there. You mentioned that the box wasn't there in yours, what year is yours?


Also just to follow up on your first question, confirmed box in the back is keyless entry module so don't touch that one lol.


This sites expensive but it's a life saver, i got a one day sub for today so if you have anything else that you need me to look up hit me up.
I have a 2019 2LT non bose V6. I and just checked and I definitely do not have that unit behind the fuse box. But again, you mentioned you have not had any interference so I am hoping for the same. Question, did you run the T harness on the same side as your power wire?
 

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Discussion Starter · #17 ·
Just to confirm, you connect your turquoise and tan T harness in the unit that behind the passenger kick panel?
Correct.

Also what is this unit shown in the picture below? It is the same unit that is on the floor on the passenger side of the Center Console. It is in the image you provided of your amp.
Looks to be the "Body Control Module"
 

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Discussion Starter · #18 ·
I have a 2019 2LT non bose V6. I and just checked and I definitely do not have that unit behind the fuse box. But again, you mentioned you have not had any interference so I am hoping for the same. Question, did you run the T harness on the same side as your power wire?
Question, have you looked from both sides of the center console? While looking thru these schematics I found the diagram for the "Radio Speaker Amplifier" and it's in the exact same place diagram-wise as the ANC. Is there a chance that it's on the driver's side and you just can't see it?
 

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Question, have you looked from both sides of the center console? While looking thru these schematics I found the diagram for the "Radio Speaker Amplifier" and it's in the exact same place diagram-wise as the ANC. Is there a chance that it's on the driver's side and you just can't see it?
No it is not there. This shows the driver side and you can see through to the other side lol
 

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