DIY: 8th Gen Accord: Install Aftermarket Amp and Subwoofer using Factory Headunit - Drive Accord Honda Forums

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Old 12-10-2011, 07:01 PM
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DIY: 8th Gen Accord: Install Aftermarket Amp and Subwoofer using Factory Headunit

I just finished installing my new LC2i(line out converter) so I thought why not make a DIY for those who are having trouble or planning to install a aftermarket sound system. Assuming you guys already have an Amp Wire kit, Line Out Converter, Amp and Subwoofer.


Caution: I AM NOT LIABLE FOR ANY DAMAGE IF YOU ARE INSTALLING IT UNCORRECTLY.



Step 1
Run your amp power wire from your battery to a fuse(dont connect wire to battery terminal until everything is installed). From the fuse, go through the pre-drill firewall hole. You got to located the firewall predrill hole. There is a black circle tab plugged in the hole. Use a small flat head screwdriver to pry it out. I used that same tab, drill a hole in it and ran the amp power wire through it or you can go buy a rubber grommet and run the wire through it.







Step 2
Under the steering wheel near the gas pedal, pull the amp power wire(the wire you stuck through the hole from earlier)and run it through and under all the way to the trunk and into the amp.









Step 3
Now for the Amp Remote Wire, I connect mine to the accessory slot in the fuse box under the steering wheel using this thing called Bussmann BP/HHH ATM Add-A-Fuse. You can buy these at any autopart store. Now, run the wire along the passenger side through and under into the trunk and into the amp.









Step 4
Now, install everything together. Look at my diagram. Super sorry for the ugly diagram. This is just the basic amp, subwoofer and loc(line out converter)installment. LC2i require different method. Factory Headunit dont have RCA's so you have to use a LOC(line out converter). You tap into the rear speakers, from the speakers go to the loc, from the loc comes out RCA to the amp.




Step 5
Have Fun listening to your new sound system
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  #2  
Old 12-10-2011, 07:03 PM
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Great DIY bro!
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Old 12-10-2011, 07:24 PM
fastball fastball is offline
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Well done! Simple, straight forward, and you showed everyone the proper way to run the power wire.

You will not believe some of the wiring jobs I've seen by people. Everyone should take note here!
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Old 12-10-2011, 07:54 PM
h2pvnus h2pvnus is offline
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Hey nice. Are you vietnamese anyway what is the Line Out Converter does?
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Old 12-10-2011, 09:12 PM
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Quote:
Originally Posted by 12_blkaccord View Post
Great DIY bro!
Thanks man!

Quote:
Originally Posted by fastball View Post
Well done! Simple, straight forward, and you showed everyone the proper way to run the power wire.

You will not believe some of the wiring jobs I've seen by people. Everyone should take note here!
Haha..thanks

Quote:
Originally Posted by h2pvnus View Post
Hey nice. Are you vietnamese anyway what is the Line Out Converter does?
Line Out Converter, or L.O.C., is a device that turns the speaker-level audio signal in a car audio system into a line-level signal that one can connect to an amplifier. This is necessary when one is adding an amplifier to a factory head unit, since factory head units do not have RCA outputs to get signals from.
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Old 12-10-2011, 09:34 PM
h2pvnus h2pvnus is offline
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It will also work with models thst have stock amp.
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Old 12-11-2011, 06:12 AM
scb2755 scb2755 is offline
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Please update this DIY with a new step #1

STEP #1 REMOVE FUSES (obviously replace them at the end)

otherwise you run the risk of frying yourself or your amp....trust me I learned the hard way about 5 years ago and luckily blew the fuse instead but you will see sparks for sure.
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Old 12-11-2011, 09:00 AM
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Quote:
Originally Posted by scb2755 View Post
Please update this DIY with a new step #1

STEP #1 REMOVE FUSES (obviously replace them at the end)

otherwise you run the risk of frying yourself or your amp....trust me I learned the hard way about 5 years ago and luckily blew the fuse instead but you will see sparks for sure.
kinda obvious not to connect to battery until the end but it was corrected.
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-20" MSR Style 093 Super Black Finish on Nexen 245/35-20
-Megan EZ Coilover
-SPC Rear Camber Kit
-3M Color Stable Tint 35%
-6000k LED License Plate
-5900 Xenon Halogen Headlight
-Rockford Fosgate Amp with 12" Solobaric L5 Subwoofer
-Mugen Replica lips
-Clazzio Peforated Leather seats
-Myron & Davis Navigation
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Old 12-11-2011, 08:13 PM
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Not bad. I've used the tap a fuse on my Boston amp, and for some reason it was taking on which drained my battery. I tried it to almost every fuse that made sense but I ended up hard wiring it to the cigg. Lighter.
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Old 12-15-2011, 06:32 PM
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Quote:
Originally Posted by spatel133 View Post
Not bad. I've used the tap a fuse on my Boston amp, and for some reason it was taking on which drained my battery. I tried it to almost every fuse that made sense but I ended up hard wiring it to the cigg. Lighter.
Just use the add a fuse like I did and connect it to the accessory slot. For some reason, my amp always stays on if I tap into the cigarette light. Look at the picture. My amp only turns on when my ignition is on.
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2009 Honda Accord EX Sedan
-Crystal Black Pearl
-20" MSR Style 093 Super Black Finish on Nexen 245/35-20
-Megan EZ Coilover
-SPC Rear Camber Kit
-3M Color Stable Tint 35%
-6000k LED License Plate
-5900 Xenon Halogen Headlight
-Rockford Fosgate Amp with 12" Solobaric L5 Subwoofer
-Mugen Replica lips
-Clazzio Peforated Leather seats
-Myron & Davis Navigation
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  #11  
Old 02-24-2012, 02:34 AM
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how many Hz should u set your amp to?
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Old 03-05-2012, 08:49 PM
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Would you know how to set it up to where you can power it on manually, instead of turning it on when you start the car?
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Old 03-05-2012, 08:57 PM
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Quote:
Originally Posted by LTN09 View Post
Would you know how to set it up to where you can power it on manually, instead of turning it on when you start the car?
My guess would be to have a switch put inline between the battery and the amp. Add in a switch before you have the power line run to the back and mount someplace on dash for easy use. That help?
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Old 03-06-2012, 04:27 AM
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Quote:
Originally Posted by 07AccordLX View Post
My guess would be to have a switch put inline between the battery and the amp. Add in a switch before you have the power line run to the back and mount someplace on dash for easy use. That help?
You wont be able to find a switch that will handle the gauge wire you need for your "power" wire. You can get a simple toggle switch at any autoparts store or radio shack. Run the switch in-line with the remote power wire. (the small gauge wire hooked to the fuse box). This will still allow the amp to get power, but it will not allow the amp to turn on unless this switch is thrown. I used this technique in a friends setup becuase its a nice simple clean way to turn off the subs without killing the radio.
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Old 03-06-2012, 06:41 AM
scb2755 scb2755 is offline
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Quote:
Originally Posted by MatLon View Post
Just use the add a fuse like I did and connect it to the accessory slot. For some reason, my amp always stays on if I tap into the cigarette light. Look at the picture. My amp only turns on when my ignition is on.
this may appear to be the case but that is because the ciggarett lighter stays powered for 1 hour (to charge a phone ect) from the charger.

I used the sunroof fuse last install I did and it worked great. You can almost defimately find a switch large enough for the power line if ih wanted (heck the city power transformers have switches for millions of volts)

but the best way is definatrly to put a switch on the remote on wire since that tells the amp to kick on and start taking juice....or just turn the bass out of it on the h.u.

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