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Lurch
Lurch, Ford Cert.
Category: Ford
Satisfied Customers: 20525
Experience:  Ford Cert., Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years
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2004 F150 XLT: stereo wiring diagram and plug pinout..plug.

This answer was rated:

Looking for stereo wiring diagram and plug pinout for 2004 F150 XLT 6-disc 4-speaker. All of the diagrams I've seen online are missing a few of the wires that are terminated in the stereo plug.

 

This what I show

 

 

Radio 12v lt. green/purple + radio harness
Radio Ground black and black/lt. green - radio harness
Radio Ignition pink/black or lt. green/yellow + radio harness
Radio Illumination lt. blue/red (dimmer) + radio harness
Factory Amp Turn-on dk. green/purple + radio harness
Notes: This is the subwoofer amplifier turn on lead. The subwoofer and amp are in the driver side rear corner of the cabin. The subwoofer speaker wires are brown/orange (+), and red/black (-) at the radio harness.
Power Antenna N/A
LF Speaker +/- orange/lt. grn - lt. blue/wht +,- radio harness
RF Speaker +/- white/lt. grn - dk. green/org +,- radio harness
LR Speaker +/- gray/lt. blue - tan/yellow +,- radio harness
RR Speaker +/- orange/red - brown/pink +,- radio harness
Immobilizer Bypass Module: Required: Yes Type: SecuriLock Part #: 556S, 556U, or 555U
Notes: Standard on all models.

 

graphic

 

 

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Customer: replied 5 years ago.

This is way better than what I've found so far.

 

Clarifications:

PIN 2 - What does "Accessory delay relay switched power" mean? Confirm that the pin is for one signal or the other and can be determined by the wire colour.

 

PIN 14 - What does "vehicle speed signal" mean?

 

PIN 15 - What does " voltage supplied in Start (overload protected)" mean?

 

PIN 18 - What does "Aux audio controls..." mean?

 

PIN 19 - What does "Aux speed controls..." mean?

 

PIN 20 - What does "Parking aid Mute" mean?

 

 

 

 

it is always best to explain "what" you are trying to do.
If you are installing other equipment than Factory (what came with vehicle)

 

Clarifications:

PIN 2 - What does "Accessory delay relay switched power" mean? Confirm that the pin is for one signal or the other and can be determined by the wire colour.

Control from the Accessory Delay Relay, prior to opening of the Driver door

 

PIN 14 - What does "vehicle speed signal" mean?

Vehicle Speed Sensor Pulse (speedometer)

 

PIN 15 - What does " voltage supplied in Start (overload protected)" mean?

Voltage while engine is cranking (fused)

 

PIN 18 - What does "Aux audio controls..." mean?

for Rear Audio Controls

 

PIN 19 - What does "Aux speed controls..." mean?

??

 

PIN 20 - What does "Parking aid Mute" mean?

To Mute the Sensor sound from the Parking Sensors (bumper)

 

 

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Lurch and 4 other Ford Specialists are ready to help you
Customer: replied 5 years ago.

I'm installing a Clarion VX401 and have a Scosche wiring harness that comes with no explanation. It's not too hard, just frustrating.

 

PIN 20 - would that not mute the stereo so you'd hear the warning from the backup sensors?

 

PIN 14 - what is this telling the stereo?

 

Thanks for the diagrams. Appreciate your expertise.

 

 

PIN 20 - would that not mute the stereo so you'd hear the warning from the backup sensors?

Have not connected anything & qouting from Ford
Mutes Parking Sensors

 

PIN 14 - what is this telling the stereo?

For Logic when using Navigation

 

 

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