How To: Aftermarket radio wiring with stock SVT sub and amp.

[Power Surge]

Originally Posted by MattZX3

ah, there are three harnesses, one for the radio, which includes the power, ground, illumination, and the other is for speaker wires

there is a seperate harness that is for the sub only, but get pics, and ill let you know what you need to do

as for posting the pics, i use photobucket.

its a free site for hosting images, you can upload them, and then when they are uploaded, it will give you a link to copy and paste, right into the text box of a post

Okay, I know I've made multiple posts on this already, so I probably sound like a retard. This thread has a few good pics, so that helped shed some light for me.

I have an 02 SVT, I have the black and yellow plugs (7 and 8 pin) and the 17 pin plug. That metra kit is the old school 80s/90s Ford dual plug kit. Does that mean the 02 harness just plugs into it even though they are not the same exact plugs? And what about the 17 pin plug? Is there a connector for that?

Thanks!

[burningatdaybreak]

I took some pics of my 02 SVT harnesses today and i hope they came out ok.
The harness on the right is the one for the sub.
I'm crossing my fingers that someone can figure out how to work it so i can get my sub working again.
Thanks.

[Power Surge]

^^^^ that's exactly what I have, and I am in the same boat.

[MattZX3]

When installing a deck in a 2003 Focus SVT I was able to integrate the factory sub amp using the extra 7 pin plug from behind the factory radio. the wiring in the plug is as follows:
white/green-
yellow/brown-
white/red- amp turn on (6volts)
white/black- column control(resistance)
brown/yellow- column control (power)
white/black- pre amp output (+)
grey/black- pre amp output (-)


from your pictures, it looks as if you have the same wire colors in your sub harness, no? if so, then follow those instructions, and it should work...

[MattZX3]

Originally Posted by Power Surge

Okay, I know I've made multiple posts on this already, so I probably sound like a retard. This thread has a few good pics, so that helped shed some light for me.

I have an 02 SVT, I have the black and yellow plugs (7 and 8 pin) and the 17 pin plug. That metra kit is the old school 80s/90s Ford dual plug kit. Does that mean the 02 harness just plugs into it even though they are not the same exact plugs? And what about the 17 pin plug? Is there a connector for that?

Thanks!

the black and yellow plugs are for the speakers, power, ground, etc...

yes, the metra kit plugs right into those

there is no plug for the third harness though, that should be your sub harness...

[brawls43]

Here's another thread that talked about similar. I think it was on 03 SVT's, not 02's but the pics might be helpful. I used this when I hooked up my stereo to use the stock amp and sub.

http://www.focusfanatics.com/forum/s...ood+audiophile

[Power Surge]

Originally Posted by MattZX3

the black and yellow plugs are for the speakers, power, ground, etc...

yes, the metra kit plugs right into those

there is no plug for the third harness though, that should be your sub harness...

I realize where I got confused on your directions. You wrote "using the extra 7 pin plug", which confused me because there IS a 7 pin plug, but what you meant to type was 17 pin plug. That's the one with the amp stuff in it. I see the amp turn on and the audio positive and negative wires.

I guess my only remaining question, would be what do I connect the subwoofer audio wires to on my AVN unit?

From what I can see, this is what I have available....

Front Line Out terminals, red and white RCA

Rear Line Out terminals, red and white RCA

Non-fader Line Out terminals, red and white RCA

Not sure how to connect my factory amp audio to that.

Thanks!

[AphotiX]

Originally Posted by Power Surge

I realize where I got confused on your directions. You wrote "using the extra 7 pin plug", which confused me because there IS a 7 pin plug, but what you meant to type was 17 pin plug. That's the one with the amp stuff in it. I see the amp turn on and the audio positive and negative wires.

I guess my only remaining question, would be what do I connect the subwoofer audio wires to on my AVN unit?

From what I can see, this is what I have available....

Front Line Out terminals, red and white RCA

Rear Line Out terminals, red and white RCA

Non-fader Line Out terminals, red and white RCA

Not sure how to connect my factory amp audio to that.

Thanks!

From what I see, the first wite/red wire connects to the auto antenna ext cable on the head unit sot hat the amp powers on when the stereo powers on, then the last (on the right) white/black wire connects to the positive on the RCA connector, and the gray/black connects to the negative. Also using a resistor between the white/red and blue cable reduces the audible pop from the amp when the stereo is turned on.

Correct me if I am wrong, I'm going to do this tonight.

[burningatdaybreak]

Hey everybody,
I have a 2002 SVT and i tried to do this myself today and i'm not getting anything out of my sub.
I connected the red/white wire to the blue/white amp turn on, then i connected the center part of the RCA cable to the black/white wire, and this is where i'm confused...
I've noticed there are conflicting posts saying to connect the grey/white wire to the outer shield of the RCA, and there are posts saying to connect the brown/yellow wire to the outer shield of the RCA cable.
I connected the outer shield of the RCA cable to the grey/white wire and i'm getting nothing out of my sub, should i switch to the brown/yellow wire?
Is this because i have an '02 SVT instead of an '03 SVT?
Any help would be greatly appreciated.

[burningatdaybreak]

Great news!
I looked at my wiring job more closely today and i found out that i accidentally attached the red/white wire to the wrong blue/white wire. I had it connected to the blue/white wire that goes to the wire harness instead of the blue/white wire that comes from the head unit.
So i switched it over and BAM! Subwoofer action.
The sound is amazing, no buzz or pop noises. my Pioneer DEH-P5000UB head unit has a high pass filter and full subwoofer control so i could adjust it to my liking.
Thanks to everyone who posted how-to info on here.
I actually smiled all the way home from work blasting metal with the windows down, every double bass hit shaking my seat.