2014 si Hooking up sub with stock head unit

Michael Sanford

Michael Sanford

Well-Known Member
98
47
Vehicle Model
2014 Civic Si
Body Style
Sedan
So I'm installing a sub into the si and I'm running into a slight issue. I've wired up the left side and the sub works fine. However on the right side I'm supposed to be splicing the adapter into an orange wire which I was able to locate going to the speaker in the trunk (picture). However, I can not find any orange wire pertaining to sound going into the back of the head unit. Any ideas?20150227_173717.jpg 20150227_173818.jpg
 
You don't need a Line Out Converter since your Si has the Premium Audio with the external amp. See this thread and use the wiring diagram at the A harness at the external amp. The amp should be near the steering column above the brake pedal. The A harness is the pre-amp outputs from the head unit. Use the sub wiring from the A harness, which is before the factory amp. The factory amp is why the stereo sounds so awful because the amp has the frequency crossovers built-in, restricting the full range sound from all the speakers.

http://9thcivic.com/forum/threads/2012-civic-audio-wiring-guide-pinouts-for-factory-radio.5916/
 
Michael Sanford said:
@Hillstones The link says it's for a 2012 civic. Is it going to be the same for the 2014-2015?
Click to expand...
It should, the external amps appear to be identical. You should double-check the wiring though once you look at the A and B harness at the amp, and the A harness at the back of the head unit, if you decide to pull the head unit.
 
ohmsburn76 said:
If I have the "premium audio head unit" (2012 si) and there's a sub in the back...I should have the amp correct? (I don't have the navi)
Click to expand...
you have the stock amp under the dash down by the drivers side footwell
 
Thanks Webby. I want to bump this pin out schematic. I was able to do my install last weekend. With a little help from a Crutchfield master sheet for dismantling my dash. (Props to guys on live chat to send that to me in less than 5 minutes) The pin out was amazing. I was able to find the remote and sub +/- out with no problems (PRE AMP). I was able to solder (right in the dash) my remote turn on and a set of female RCAs (not a LOC ) to the correct wires. It was a one and done for me. This was my first attempt at a custom box install. I still need to get it tuned...it a touch loud. Anyway, using my factory radio, factory amp for my mids and highs. Everything works as is should

Heres what i used for my RCA's (http://www.sonicelectronix.com/item_67780_Rockford-Fosgate-RFIF2SW.html) (I simply just soldered the positives and negatives together and then to the sub +/- in the appropriate wire harness., again thank you guys at Crutchfield live chat for that advice too)

Sub Install 1.jpg Sub Install 2.jpg

Sub Install 1.jpg Sub Install 2.jpg
 
ohmsburn76 said:
Thanks Webby. I want to bump this pin out schematic. I was able to do my install last weekend. With a little help from a Crutchfield master sheet for dismantling my dash. (Props to guys on live chat to send that to me in less than 5 minutes) The pin out was amazing. I was able to find the remote and sub +/- out with no problems (PRE AMP). I was able to solder (right in the dash) my remote turn on and a set of female RCAs (not a LOC ) to the correct wires. It was a one and done for me. This was my first attempt at a custom box install. I still need to get it tuned...it a touch loud. Anyway, using my factory radio, factory amp for my mids and highs. Everything works as is should

Heres what i used for my RCA's (http://www.sonicelectronix.com/item_67780_Rockford-Fosgate-RFIF2SW.html) (I simply just soldered the positives and negatives together and then to the sub +/- in the appropriate wire harness., again thank you guys at Crutchfield live chat for that advice too)
Click to expand...

I bought the Rockford fosgate line driver rf-bld. What do I do? I have no navi, touch screen
 
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