Side Mirror Marker Lights not working correctly - Ford Powerstroke Diesel Forum

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post #1 of 9 Old 12-09-2009, 07:48 AM Thread Starter
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Side Mirror Marker Lights not working correctly

Hey guys, first time posting a question here.

I have a 03 ' excursion 6.0.

My side mirror lights are acting strange, the turn lights (blinking) on the mirrrors work but the running (Park) lights don't work.

So I am thinking it is a wire issue or something like that, so does anybody have an suggestions what I should look at?
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post #2 of 9 Old 01-26-2010, 09:26 AM Thread Starter
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So I have done more digging,

Is it true that the wires parking lights are directly connect to the highlight switch? I am wondering if a faulty headlight switch could cause this problem.


2003 Ford Excursion 6.0L
Stock For now!
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post #3 of 9 Old 04-26-2013, 06:22 PM
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mirror light issue

What did you find as the problem my 2003 ex has that same problem and it drives me nuts!!
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post #4 of 9 Old 04-27-2013, 12:22 PM
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Quote:
Originally Posted by chuckles_1205 View Post
Hey guys, first time posting a question here.

I have a 03 ' excursion 6.0.

My side mirror lights are acting strange, the turn lights (blinking) on the mirrrors work but the running (Park) lights don't work.

So I am thinking it is a wire issue or something like that, so does anybody have an suggestions what I should look at?
I'd pull the door skin off and pull the connector apart that goes to the mirror.

The brown wire is the park light wire. See if it has power when the lights are on. That should help you determine if it is the light module in the mirror, or a wiring issue.

The wiring for the park lights in the mirrors comes from the CJB, and is spliced to the license plate lamps and rear park lights... so if that splice is bad (very unlikely), you should have issues with those lights as well.

You could also disassemble the mirror and check for power in there too.


Lee
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post #5 of 9 Old 02-27-2016, 12:25 PM
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Me Too

I'm having the same problem.
01 Excursion Limited

Quote:
Originally Posted by ve7fet View Post
The brown wire is the park light wire. See if it has power when the lights are on. That should help you determine if it is the light module in the mirror, or a wiring issue.Lee
No power on the brown wire at any point I can check it.
Tested the lamps, they are good (both sides).

Quote:
Originally Posted by ve7fet View Post
The wiring for the park lights in the mirrors comes from the CJB, and is spliced to the license plate lamps and rear park lights... so if that splice is bad (very unlikely), you should have issues with those lights as well.Lee
I have been unable to locate this module.
My tail (rear park) lights and tag lights illuminate fine.

I would love to find a wiring diagram to back-track the brown wire to the junction where it ties into the tail lights and tag lights.
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post #6 of 9 Old 02-27-2016, 03:54 PM
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Quote:
Originally Posted by LurkerX View Post
I'm having the same problem.
01 Excursion Limited


No power on the brown wire at any point I can check it.
Tested the lamps, they are good (both sides).


I have been unable to locate this module.
My tail (rear park) lights and tag lights illuminate fine.

I would love to find a wiring diagram to back-track the brown wire to the junction where it ties into the tail lights and tag lights.
Holy old post...

I don't have diagrams going back that far.

CJB is the central junction box under the dash (fuse panel under the dash).

Sounds like you'll need to find a Service Manual DVD and get all the wiring diagrams and splice locations to start tracing.


Lee
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post #7 of 9 Old 02-28-2016, 10:04 AM
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Quote:
Originally Posted by ve7fet View Post
Holy old post...
That's only 3 years...
My truck is 15.


Quote:
Originally Posted by ve7fet View Post
CJB is the central junction box under the dash (fuse panel under the dash).
OK.
So, to put another way: It is simply the "kick panel" fuse box - NOT a separate junction. There are also many references to a Smart Junction Box (SJB), that I'm pretty sure my truck predates.

---------------------------------------------------------------------

When doing my searching, I find plenty of people that have this issue - but no solutions.

My truck originally came with the "little" mirrors - which had the turn signal, but not the marker lights.

When I originally went to Tow Mirrors, they came from the junkyard and were in rough shape. I'd always assumed the marker lights themselves were bad - as the lenses were cracked, and the electronics had long been exposed to the elements.

Now, I wonder if that wire was ever live in the first place.
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post #8 of 9 Old 02-28-2016, 10:33 AM
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Quote:
Originally Posted by LurkerX View Post
That's only 3 years...
My truck is 15.


OK.
So, to put another way: It is simply the "kick panel" fuse box - NOT a separate junction. There are also many references to a Smart Junction Box (SJB), that I'm pretty sure my truck predates.

---------------------------------------------------------------------

When doing my searching, I find plenty of people that have this issue - but no solutions.

My truck originally came with the "little" mirrors - which had the turn signal, but not the marker lights.

When I originally went to Tow Mirrors, they came from the junkyard and were in rough shape. I'd always assumed the marker lights themselves were bad - as the lenses were cracked, and the electronics had long been exposed to the elements.

Now, I wonder if that wire was ever live in the first place.
Yes, the CJB is the "kick panel" fuse box.

You can save yourself the trouble and stop looking. That wire won't exist.

I just looked in the schematics for the '02, '03, and '04 Excursions and SD's.

Looks like the Ex's back then were never equipped with marker light wiring for the mirrors, only turn signals.

In '02 there don't appear to be marker lights in the mirror in the pickups either. It looks like that may not have been an option until '03 (that's when it starts to appear in the schematics).

So, if you want the marker lights to work in your mirrors, since they were added after the fact anyways, you'll need to wire out the brown wire from the mirrors to the park light circuit. The park light circuit should be a brown wire in the CJB, or the brown wire coming off the back of the headlight switch.


Good luck!


Lee
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post #9 of 9 Old 02-28-2016, 04:40 PM
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Well...

Quote:
Originally Posted by ve7fet View Post
You can save yourself the trouble and stop looking. That wire won't exist.

I just looked in the schematics for the '02, '03, and '04 Excursions and SD's.

Looks like the Ex's back then were never equipped with marker light wiring for the mirrors, only turn signals.
I guess it's better to know...
I'll pull the Inner Door Cover off and see if the brown wire is on the "truck" side of the mirror connector. I'm pretty sure it is. The question then becomes if it makes it into the cab.

Quote:
Originally Posted by ve7fet View Post
The park light circuit should be a brown wire in the CJB, or the brown wire coming off the back of the headlight switch.
I don't have a brown wire on the back of my headlamp switch. I mapped that out pretty well when I was ciphering on how to have my fog lamps always on.
[Jumper pins 2 and 12 - blows Fuse# 15 under hood, so pull it first]

Anyway, park lamps involve pins 10, 11, & 12 - with 10 being the "hot", IIRC.

So, I should be able to tie to 11 (since I'm already using 12) to fire the clearance lights. They are LEDs, so current draw should be negligible.
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