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Thread: Aftermarket Deck W/ Stock SVT Sub Wiring (Re-visited) Reply to Thread
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Topic Review (Newest First)
09-18-2013 04:59 PM
twiggss in for later
08-01-2013 07:45 PM
kwg2371 bump for the newbs
10-28-2012 08:34 PM
rdaex Ill be doing this soon, just picked up the Pioneer DEH4400HD for 68 bucks!!
10-16-2012 12:12 AM
jonyrocks
Quote:
Originally Posted by mix1983 View Post
Don't run audio cables (speaker wire or RCA) along side power cables. You want to run audio cables down one side of the car, and power cables down the other. The audio cables will pick up interference from the power cables and you will get noise.
its the way it is from factory...
10-13-2012 02:05 AM
mix1983 Don't run audio cables (speaker wire or RCA) along side power cables. You want to run audio cables down one side of the car, and power cables down the other. The audio cables will pick up interference from the power cables and you will get noise.
10-11-2012 07:25 PM
jonyrocks
Quote:
Originally Posted by loudfocus01 View Post
I followed this how too and when I turn on my headunit, I hear a buzzing sound coming from the subwoofer.

What could be causing this? How do I fix it?
same problem, i think its because the radio puts out 12v when we need 6v... anyone know what kind of resistors we could use to fix this?
06-30-2012 01:14 AM
eriks02SVT I tried this on my 02' SVT FOCUS and it's freakin awesome with base!!
12-08-2011 05:59 PM
Grinder
Quote:
Originally Posted by kwg2371 View Post
1. correct front and rear speakers will be wired in to the existing stock harness(unless you plan on throwing an after market amp to power the speakers)

2. you only need ONE RCA to be spliced in and you can plug it in to either white or red output, it doesn't matter which one its plugged into (just make sure you understand what is positive an negative on the RCA cable)

3. in some circumstances you wont need a resistor (the way I have mine wired as shown in this how to, I don't get any kind of popping noise, most decks now a days have built in sub crossovers to where you can adjust them and there frequencies) you'll just have to take a look at the manual.

the one on my deck is accessed threw the main controls where I would adjust highs, lows, bass and treble ETC. I have the option to adjust from 50 -/+ 6, 80 -/+6, 120 -/+6

my best advice is if you can find someone parting out a junk SVT if they would be willing to chop off the stock wiring plug harness's so you don't have to hard wire directly to the deck
hope this helps
Thanks for the response! I understand what I'm doing now but I still don't get what the difference between your suggestion and me simply splicing my sub + to my red RCA sub output and my sub - to my white RCA sub output.

By using the shield of the RCA cable as ground, you eliminate the cables ability to filter RFI noise. So, if the only difference between the two above suggestions is that I am using a single RCA to run two output circuits wouldn't the extra 30 seconds required to run two RCA cables be worth my while due to RFI filtering ability?

The reason I ask is I have a hard time believing Sony would go through the trouble of putting a red SUB + and a white SUB - on the back of my headunit if all I need is one wire.

If it works it works, I'm just trying to figure out the difference between the two methods.

From what I gather is:

The pre amp outputs don't require hardly any current flow so by using only one RCA I am basically using the minimal amount of wire required. The sub pre amp - will be grounded at all times through the RCA shield circuit and the signal will travel along the RCA core providing sub pre amp +. The amp gets the signal and steps up the current to the magnet and thus runs the sub. If this is true, Ford just wasted their time and money making a dedicated pre amp - wire between the stereo and amp.
12-08-2011 05:24 PM
kwg2371
Quote:
Originally Posted by Grinder View Post
I'm in the process of doing this conversion as well. I bought a Sony DSX-S100 and I intend to incorporate my factory sub. I opted not to spend another $100 to make my steering wheel controls work.....yet.

Anyhow, I follow these instructions 100% with the exception of my sub + and -

My deck has 3 pairs of RCA jacks (one white end, one red end) on the back. One labeled "Front audio out" , another labeled "BUS audio in" and another "Rear/Sub audio out".

My front and rear speakers will be wired through the pigtail harness that also has my antenna, powers and grounds...right?

If I use the signal and sheild wires of a spare RCA cable as my sub + and -, which RCA cable labled "Rear/Sub audio out" do I plug the spare RCA cable into? Red or white?

Shouldn't I simply splice the WH/BK and GY/BK to the Red AND White RCA outputs?

I just don't understand why there are two sub output RCA cables but I would use only one. Is the red sub cable for aftermarket sub #1 and the white for aftermarket sub #2?

Also, I have heard that it is necessary to wire a resistor in series with the amp wake-up power (RD/WH) because otherwise I will get a popping noise from the sub when I turn the radio on/off. Does the factory sub run on 6v instead of 12v? If I need a resistor, how big? I've heard anywhere from 200 ohms to 1.5K ohms......

Another thing making this more difficult is that I'm replacing an aftermarket deck. The crappy Dual unit currently in the car is junk and the meathead who installed it didn't use an adapter plug. Little of the factory harness connector is intact. I'll be hard-wiring pretty much everything....

I'm really comfortable with DC electrical circuits but I haven't done a lot of car audio work so this is a bit new to me. I'm not familiar with crossovers and bridges and other popular aftermarket audio devices...so I'd like to make this work with as little modification as possible

Thanks in advance for the help!
1. correct front and rear speakers will be wired in to the existing stock harness(unless you plan on throwing an after market amp to power the speakers)

2. you only need ONE RCA to be spliced in and you can plug it in to either white or red output, it doesn't matter which one its plugged into (just make sure you understand what is positive an negative on the RCA cable)

3. in some circumstances you wont need a resistor (the way I have mine wired as shown in this how to, I don't get any kind of popping noise, most decks now a days have built in sub crossovers to where you can adjust them and there frequencies) you'll just have to take a look at the manual.

the one on my deck is accessed threw the main controls where I would adjust highs, lows, bass and treble ETC. I have the option to adjust from 50 -/+ 6, 80 -/+6, 120 -/+6

my best advice is if you can find someone parting out a junk SVT if they would be willing to chop off the stock wiring plug harness's so you don't have to hard wire directly to the deck
hope this helps
12-08-2011 02:43 PM
Grinder I'm in the process of doing this conversion as well. I bought a Sony DSX-S100 and I intend to incorporate my factory sub. I opted not to spend another $100 to make my steering wheel controls work.....yet.

Anyhow, I follow these instructions 100% with the exception of my sub + and -

My deck has 3 pairs of RCA jacks (one white end, one red end) on the back. One labeled "Front audio out" , another labeled "BUS audio in" and another "Rear/Sub audio out".

My front and rear speakers will be wired through the pigtail harness that also has my antenna, powers and grounds...right?

If I use the signal and sheild wires of a spare RCA cable as my sub + and -, which RCA cable labled "Rear/Sub audio out" do I plug the spare RCA cable into? Red or white?

Shouldn't I simply splice the WH/BK and GY/BK to the Red AND White RCA outputs?

I just don't understand why there are two sub output RCA cables but I would use only one. Is the red sub cable for aftermarket sub #1 and the white for aftermarket sub #2?

Also, I have heard that it is necessary to wire a resistor in series with the amp wake-up power (RD/WH) because otherwise I will get a popping noise from the sub when I turn the radio on/off. Does the factory sub run on 6v instead of 12v? If I need a resistor, how big? I've heard anywhere from 200 ohms to 1.5K ohms......

Another thing making this more difficult is that I'm replacing an aftermarket deck. The crappy Dual unit currently in the car is junk and the meathead who installed it didn't use an adapter plug. Little of the factory harness connector is intact. I'll be hard-wiring pretty much everything....

I'm really comfortable with DC electrical circuits but I haven't done a lot of car audio work so this is a bit new to me. I'm not familiar with crossovers and bridges and other popular aftermarket audio devices...so I'd like to make this work with as little modification as possible

Thanks in advance for the help!
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