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2001 f350 headlight issues need to fix before dark

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Old Jun 3, 2021 | 04:02 PM
  #31  
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Originally Posted by 95rustbelt250
I cleaned up the headlight switch and now I’m getting a click from these relays I located...are these normal or has somebody got their hands on it
i'm on the road again as well but will be home tomorrow. I do have my truck with me and will check my relays to see if the are acting like yours
 
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Old Jun 3, 2021 | 05:43 PM
  #32  
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That relay block is for the 4 parking lights (with remote) and fuel pump, if I am not mistaken.
 
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Old Jun 3, 2021 | 05:54 PM
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I tried placing new relays in but still had the same issue. Probably a wire or something somewhere along the way huh? Have tried a new headlight switch, fuses, relays, multifunction switch...
 
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Old Jun 6, 2021 | 04:29 PM
  #34  
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Originally Posted by 95rustbelt250
I tried placing new relays in but still had the same issue. Probably a wire or something somewhere along the way huh? Have tried a new headlight switch, fuses, relays, multifunction switch...

bump if anybody has any ideas
 
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Old Jun 6, 2021 | 08:54 PM
  #35  
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Originally Posted by 95rustbelt250
bump if anybody has any ideas
If you have replaced all of the hardware and fuses and are still having issues, I would suspect a wiring fault of some sort.

This could be in the ground or the power leg of the circuit.
 
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Old Jun 7, 2021 | 09:01 AM
  #36  
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Originally Posted by Sous
If you have replaced all of the hardware and fuses and are still having issues, I would suspect a wiring fault of some sort.

This could be in the ground or the power leg of the circuit.
Is there anything to point me in the right direction? Grounds I can check? Pictures or diagrams showing which wires are which/ what to follow and check?

seems like I’ll probably have to pull apart the dash and everything to get a good view, hopefully someone has a better idea
 
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Old Jun 7, 2021 | 11:45 AM
  #37  
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Originally Posted by 95rustbelt250
Is there anything to point me in the right direction? Grounds I can check? Pictures or diagrams showing which wires are which/ what to follow and check?

seems like I’ll probably have to pull apart the dash and everything to get a good view, hopefully someone has a better idea
I am away from home in rural/isolated ID right now visiting family and my time is limited.

Although, I would like to help you out. I just read each of your replies above.

You are having a headlight issue on your 2001 F350 correct?

You have replaced all the hardware, relays and fuses and feel there is a ground, 12v or wiring fault somewhere?

Did you fix the water leak?

Did you check for codes, especially from the GEM?

Do you have a multimeter?

Did you remove the GEM for a visual inspection and look for any water intrusion?

I can most certainly take a couple of hours to gather up all of the diagrams, color codes, circuit ID's, ground terminal numbers, connector pin outs, etc... I just want to make sure we (you, me and any other readers) are not missing something simple and chasing a ghost.

I will wait for your reply before collecting the requested information from the Ford Service Manual.
 
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Old Jun 7, 2021 | 01:45 PM
  #38  
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Originally Posted by Sous
I am away from home in rural/isolated ID right now visiting family and my time is limited.

Although, I would like to help you out. I just read each of your replies above.

You are having a headlight issue on your 2001 F350 correct?

You have replaced all the hardware, relays and fuses and feel there is a ground, 12v or wiring fault somewhere?

Did you fix the water leak?

Did you check for codes, especially from the GEM?

Do you have a multimeter?

Did you remove the GEM for a visual inspection and look for any water intrusion?

I can most certainly take a couple of hours to gather up all of the diagrams, color codes, circuit ID's, ground terminal numbers, connector pin outs, etc... I just want to make sure we (you, me and any other readers) are not missing something simple and chasing a ghost.

I will wait for your reply before collecting the requested information from the Ford Service Manual.


Is it common to leak under the black cover there across the dash? It seemed like the water was getting in from up there and then the top drivers side windshield. I tried to put sealant across as a patch which seemed to help but it hasn’t rained lately


I tried replacing everything correct and still had the same issue so I have the original parts right now. I haven’t checked for codes or pulled the GEM
 
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Old Jun 7, 2021 | 04:44 PM
  #39  
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Originally Posted by 95rustbelt250
Is it common to leak under the black cover there across the dash? It seemed like the water was getting in from up there and then the top drivers side windshield. I tried to put sealant across as a patch which seemed to help but it hasn’t rained lately


I tried replacing everything correct and still had the same issue so I have the original parts right now. I haven’t checked for codes or pulled the GEM
I don't think that is a common leak point, but uncommon or not, it may have been leaking.

You should pull the GEM and at least give the PCB's a good visual inspection. You have gone that far into the dash, you kay as well cross the finish line.

Do you have a multimeter? Wiring diagrams and connector maps will do mo good if you don't have a way of testing for continuity or faults.

Is there CEL? Do you have a way to check for GEM codes that are soft codes and stored?

I am most certainly willing to gather the diagrams and what not, but it will be pointless if you don't have a method to test them.

Also, if there are codes for the GEM, that will give us a clue instead of pulling up 25 different pages if documentation.

I look forward to your response.
 
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Old Jun 7, 2021 | 07:13 PM
  #40  
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In addition, Mark K just described the sort of testing you will need to accomplish with the multimeter.

https://www.ford-trucks.com/forums/1...l#post19916903

Let me know how you would like to proceed.
 
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Old Jun 8, 2021 | 07:22 AM
  #41  
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Originally Posted by Sous
In addition, Mark K just described the sort of testing you will need to accomplish with the multimeter.

https://www.ford-trucks.com/forums/1...l#post19916903

Let me know how you would like to proceed.

I tried the link is that the right one? I do have access to a multimeter just nothing to scan for codes - no check engine light on. The only odd light on is that the high beam light is constantly on when the headlights are in the on position

I will try to find some good information on getting the gem apart and cleaned up and give that a shot this afternoon hopefully
 
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Old Jun 8, 2021 | 10:42 AM
  #42  
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Originally Posted by 95rustbelt250
I tried the link is that the right one? I do have access to a multimeter just nothing to scan for codes - no check engine light on. The only odd light on is that the high beam light is constantly on when the headlights are in the on position

I will try to find some good information on getting the gem apart and cleaned up and give that a shot this afternoon hopefully
Yes, post #17 by Mark Kovalsky.

The information below was taken from the 7.3L PSD Tech Folder regarding the GEM.

GEM - General Electrical ModuleThere are also videos and images out there on how to access the GEM, but chances are you will have no trouble removing it.

Once I hear back from you on the condition of the GEM, I will respond (or hopefully someone else will have a comment). I am helping to build and install kitchen cabinets today, so it will be a busy day.
 
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Old Jun 9, 2021 | 06:07 AM
  #43  
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Originally Posted by Sous
I am helping to build and install kitchen cabinets today, so it will be a busy day.
What state are you doing this in?
 
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Old Jun 9, 2021 | 07:28 AM
  #44  
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Originally Posted by Sous
Yes, post #17 by Mark Kovalsky.

The information below was taken from the 7.3L PSD Tech Folder regarding the GEM.

GEM - General Electrical ModuleThere are also videos and images out there on how to access the GEM, but chances are you will have no trouble removing it.

Once I hear back from you on the condition of the GEM, I will respond (or hopefully someone else will have a comment). I am helping to build and install kitchen cabinets today, so it will be a busy day.
I pulled it off and am just getting around to inspecting things. Not sure if it’s related but my horn worked for the first time ever after messing with the relay for awhile if it could be connected to the gem. Going to see if I can clean it up and find anything out of the ordinary.

stay cool building it has been a scorcher here last week this week


 
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Old Jun 9, 2021 | 09:04 AM
  #45  
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Originally Posted by 95rustbelt250
I pulled it off and am just getting around to inspecting things. Not sure if it’s related but my horn worked for the first time ever after messing with the relay for awhile if it could be connected to the gem. Going to see if I can clean it up and find anything out of the ordinary.

stay cool building it has been a scorcher here last week this week
cleaned up all of the connections and reinstalled, still having the same issue but my horn does work. Disappointed I can’t find anything obvious yet, please if anyone has any ideas this old girl needs headlights
 
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