Aftermarket Head Unit Install: Wiring Harness and Amp Bypass Questions
#1
Intermediate
Thread Starter
Aftermarket Head Unit Install: Wiring Harness and Amp Bypass Questions
Got a new head unit for Christmas and am planning on installing it.
I was wondering which wiring harness I should use for my 06' non-navi TL. Also, if anyone has a wiring diagram for the harnesses it would be immesely helpful.
The other problem I am having is figuring out the factory amp bypass. Is there a harness I can buy to bypass it, or will I manually need to reconnect all the wires? Wiring diagrams here would also be helpful.
I was wondering which wiring harness I should use for my 06' non-navi TL. Also, if anyone has a wiring diagram for the harnesses it would be immesely helpful.
The other problem I am having is figuring out the factory amp bypass. Is there a harness I can buy to bypass it, or will I manually need to reconnect all the wires? Wiring diagrams here would also be helpful.
#2
For the Amp Bypass, you will have to cut and solder the wires. The wires from the back of the stock head unit are like 16ga (not sure) wires, where as the outputs from the amp are much beefier. I used an alpine powerpack and placed it right where the stock amp used to be and tied into the stock system from there. I have to look in the garage for the speaker wire colors. I used the Acura harness from Best Buy to not have to cut into anything stock.
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Ua7Trashh (11-25-2021)
#3
I used a Metra IBR-WHHD2 for the aftermarket radio. It works well and is pretty cheap. I think it is like 5 bucks off of amazon, but I needed it immediately so I had to buy one at my local Best Buy for 20 bucks. I am having a problem with my front speakers not working on the aftermarket head unit though. I have tried to install the speakers using the factory wiring and connect the speakers through a harness given to me with my speakers from crutchfield. This would allow me to run the front speakers from the aftermarket head unit and would be much less time to install my whole system. To do this, do I need to bypass the factory amp?
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Ua7Trashh (11-25-2021)
#4
Intermediate
Thread Starter
Yeah you do need to bypass the amp. I just extended the cables from the back of the radio to the stock amp location and tapped the wires going to each speaker. It is the big wiring harness, NOT the black one.
#6
Intermediate
Thread Starter
I had the same problem when I first installed mine too. I found that it was easiest to just extend wires from the back of the radio to the output of the stock amp. In the installation you evidently removed the stock amp on signal wire, which you are supposed to. So you can either tap that wire and have it turn on the amp with huge distortion, or you can run the wires around the amp, then sell your stock components. I ended up making more money between the stock amp, radio, and HFL module than the aftermarket radio cost me.
#7
Suzuka Master
you will have to manually splice/cutting wiring to by pass factory amp. Also if you do so please replace all of the speakers and wiring while at it since nothing worst than having mismatch output between the new amp and factory speaker.
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#8
10th Gear
Join Date: Jul 2014
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Id avise of your bypassing the bose system, get some fairly decent speakers, kickers, infmitys kappas, mb quart something nice. But are you going to lose the centre channel and the lossless audio decoding. Are you leaving the screen and will bring it down and putting in the pocket area or are you removing the whole situation and doing it on th are you leaving the screen and moving it down and putting in the pocket area or are you removing the whole shabamge and makong your own kit for where the navi is? Bypassng the amp isnt anissue i can get you wire colors, if your looking for speakers they are 9x out of 10 always braided together you can pop em with a double aa bettery nothing stronger, unless your using a phase tester/tone generator/multimeter are you going to i tegrate the woofer? Lmk what wiring you meed mate jru12347 at msn dot com
#10
Road Racer / Solo Addict
I used a kit this week which uses Factory Amp and Stock Speakers including the Sub while using an aftermarket Head Unit.
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
#11
I used a kit this week which uses Factory Amp and Stock Speakers including the Sub while using an aftermarket Head Unit.
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
Would you please let me know how you got your to work? Color of the wires would be great as well.
Thanks,
Scott
#12
Can you please share what you did to get your sound working? I purchased a wire harness that promised to keep my factory amp and sub woofer, but when I connected all the wires, I get no sound. I did not splice any wires near the amp or on the factory harness.
Would you please let me know how you got your to work? Color of the wires would be great as well.
Thanks,
Scott
Would you please let me know how you got your to work? Color of the wires would be great as well.
Thanks,
Scott
#13
Advanced
#16
I used a kit this week which uses Factory Amp and Stock Speakers including the Sub while using an aftermarket Head Unit.
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
#17
I used a kit this week which uses Factory Amp and Stock Speakers including the Sub while using an aftermarket Head Unit.
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
You have to splice a cable to trigger the amp to turn on and another two cables to get the subwoofer connected to the radio output.
Pretty straight forward..
All the wiring I did was behind the radio..
What harness was used?
what wires needs to be splice?
what two wires for sub (rca?)
#18
As far as splicing, you have to make three connections on Connector C (the 26-pin gray one): connect BLU/WHT of your head unit to RED/YEL (pin 11, Amplifier ON), and an RCA to RED/BLU (pin 2, Subwoofer (+)) and WHT/GRN (pin 15, Subwoofer (-)).
The RED wire from your head unit should be connected to two wires on the Metra harness: RED (ACC switched power) and BLU (pin 1, YEL/GRN on Acura side, antenna power).
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FGbG-Tech CyberModz3D (04-03-2023),
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#19
Bypassing Stock Bose Amp
I am curious if anybody has pictures they could send me on how to splice into and connect my stock Bose Amp to my aftermarket stereo, PLEASE!!! I've read the forums and the one I found I could follow I've lost somehow and I'm at a loss here. Been on this thing splicing and resplicing, for TWO DAYS now. After having to do transmission work. Please I'm literally going crazy here. I have the dash torn apart so I can do it behind the stereo, to the EQ or however. Just really don't want to wire ALL THE WAY BACK to the actual amp. I have all equipment and tools needed when ready also. Thank you ever so much.
#21
Suzuka Master
I would wait for a Mod to move your question to the appropriate forum for the 2G. 3G TL does not have the Bose amp so no one here knows the wiring diagram.
#22
#23
Suzuka Master
Hmnnnnn a 2000 TL is not a THIRD GENERATION TL. your in the 3G TL forum. you need to be in the 2G forum.
#24
Suzuka Master
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