03 ford expedition factory amp/sub

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jwa112

Member - Posts: 6

Joined: February 22, 2007

Location: United States

Posted: February 22, 2007 at 7:45 PM / IP Logged

hello,

i just had a avic d1 installed in my 03 expedition, now the factory amp/sub are not working.

can anyone help me get it hooked up, it sounds like crap.

also, the factory dvd/lcd in the back isn't working anymore. maybe someone can help me with that too.

thanks everybody

jeff

Bmnicolosi

Copper - Posts: 173

Joined: January 26, 2005

Location: Louisiana, United States

Posted: February 22, 2007 at 11:14 PM / IP Logged

usually when u install a new headunit in those vehicles, you loose all those features.

If you say "I already know how", don't ask me a single question.

jwa112

Member - Posts: 6

Joined: February 22, 2007

Location: United States

Posted: February 23, 2007 at 10:20 AM / IP Logged

thanks for the reply, but i'm thinking there has to be a way around this, and someone must have ran in to this prolblem. if not, has anyone removed the factory sub/amp and replaced it with something else that fit right in?

thanks for your time, jeff

jstruckman

Copper - Posts: 465

Joined: May 03, 2004

Posted: February 23, 2007 at 10:44 AM / IP Logged

There is a 8 pin connector that has the amp turn on and the low level audio signal to the sub amp. Just wire into it.

jwa112

Member - Posts: 6

Joined: February 22, 2007

Location: United States

Posted: February 23, 2007 at 2:16 PM / IP Logged

now when you say 8 pin connector, you mean the one that came out of the factory radio?

i think there were three plugs that went into the factory hu.

1 was the install harness

2 was i think the factory dvd/lcd

so 3 should be the sub/amp? the smallest plug

thanks again

Silvrefox

Copper - Posts: 126

Joined: August 11, 2005

Location: Oklahoma, United States

Posted: February 23, 2007 at 6:58 PM / IP Logged

What wiring harness are you using? If it's the metra 1771, go to Best

Buy and tell them what you are doing. We stock the harness in our bay that enables you to use the factory amp and sub. You may get a turn-on pop, but if you find the right size resistor you can put it in line with the remote wire (blue/white) and make it disappear.

jwa112

Member - Posts: 6

Joined: February 22, 2007

Location: United States

Posted: February 23, 2007 at 8:30 PM / IP Logged

silverfox, now thats what i needed to hear. the funny thing is i went there around noon time and they were closed because of a power outage.

so i guess thats where i'm going tomorrow. thank you so much, i'll let you guys know how i make out.

also, am i pushing it to much if i want the factory lcd/dvd to work too?

jwa112

Member - Posts: 6

Joined: February 22, 2007

Location: United States

Posted: February 24, 2007 at 8:18 PM / IP Logged

silverfox, went there today anf got the metra 70-5700. it had the plug for the sub/amp on it. i went home and hooked it up. now there are a couple of questions i need to ask.

1. i do get the pop every time i turn on the system. where can i find a resistor (radio shack) and what does it do?

2. now it seems like the sub is overpowering all the door speakers. maybe i hooked it up worng?

on the back of the plug there were 2 blue/white 2 black 1 white 1 WHITE/ black 1 gray 1 gray/black

i hooked it like this

1 blue/white to red in the main harness

1 black to the black in the main harness

1 white to the white in the main harness

1 WHITE/ black to the WHITE/ black in the main harness

the other 4, i just taped up

also i did the ground so you can watch dvd's when driving. that worked great.

thanks for your time and help. jeff

jwa112

Member - Posts: 6

Joined: February 22, 2007

Location: United States

Posted: February 27, 2007 at 8:15 AM / IP Logged

just looking to see if silvrefox or anyone else can help me with this.

thanks jeff

warpedimage3

Copper - Posts: 90

Joined: September 16, 2005

Location: United States

Posted: February 27, 2007 at 10:26 AM / IP Logged

take the blue/white wire coming out of the d1 put 2 resistors of the same size in series and ground the other end. Then take a wire and connect it inbetween the 2 resistors and hook that up to the blue/white wire in the harness you bought. This is a voltage divider network and will cut the source voltage in half. A ford amp will turn on at 6v but not pop like it will at 12v.

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03 ford expedition factory amp/sub

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