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So I had posted awhile back about trying to put a sound system in my 2020 rs. I finally got my harness all plug and play into the factory Bose unit. Thanks to LLJ customs. I also for those people wondering about that “chime” that they were trying to get rid of. I also got a disablement part that plugs to the noise cancelling so that the chime everyone was annoyed by does not sound through the speakers. Everything has been smooth
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Thanks for the heads up! I've been seeing the posts about the chime too & was worried the LLJ harness might have the chime also. Will definitely be ordering my harness as soon as I have some extra cash!
 

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So this is what they made and sent me. All plug and play. The small plug on the right is the noise cancellation harness that eliminates the chimes from going through the sound system. I installed a amp and subwoofer. The sound is clean
 

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View attachment 1009
So this is what they made and sent me. All plug and play. The small plug on the right is the noise cancellation harness that eliminates the chimes from going through the sound system. I installed a amp and subwoofer. The sound is clean
Thanks for posting @Ray25, I initiated a thread last year about this and will now order one to see if it works for my situation.:cool:
 

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So I had posted awhile back about trying to put a sound system in my 2020 rs. I finally got my harness all plug and play into the factory Bose unit. Thanks to LLJ customs. I also for those people wondering about that “chime” that they were trying to get rid of. I also got a disablement part that plugs to the noise cancelling so that the chime everyone was annoyed by does not sound through the speakers. Everything has been smooth View attachment 1006
View attachment 1009
So this is what they made and sent me. All plug and play. The small plug on the right is the noise cancellation harness that eliminates the chimes from going through the sound system. I installed a amp and subwoofer. The sound is clean
@Ray25, I forgot to ask, did you add an amp to your factory door/dash speakers or just for the bass speakers? I know that is where my problem stems from, not the bass speakers.
 

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Discussion Starter #6 (Edited)
Yeah it’s worth it. You can also contact LLJ customs to configure your harness to what you want and they will make it happen. But since the Bose already has an amp to supply good bass I just wanted to add a subwoofer to give it more of a deep bass sound. But yes I did add an amp with the subwoofer. Bose and kicker together makes a crisp clear and really good bass I’ve gotten many compliments so far.
 

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Where'd you mount the sub amp? and how'd you go about running the power for the sub amp? I'm coming from a bmw as my previous car and the battery was in the trunk so it made amp installs a breeze.
 

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So in the blazer. There is some storage room around the spare tire area when lifting the hatch the sub is sitting on. I have the amp in that storage area. So as far as the power I ran it from the front there is a rubber grommet on the passenger side firewall where I ran the power to the amp. Then with the power,rca, and remote wire I ran them along the passenger side to the back. Easy install took me about 20 mins.
 

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Hey, question for you guys that have aftermarket subwoofers in your blazers. so ive been looking into getting a subwoofer put into mine & im concerned about the start/stop feature built into the blazer. the voltage on my 2020 blazer rs drops well below 12 volts whenever im stopped at a stop light. as far as i can tell this will affect the amplifiers performance, possibly cutting out the subwoofer. does anyone have this problem currently?? or did you somehow bypass the start/stop feature? kicker has an amp that still performs well all the way down to 8volts & is specifically built for start/stop vehicles. Is this something I should buy? Thanks
 
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