2003 dodge ram deisel change fcm no change.still only have one pasanger side signal and brake light.tail and park lights work,one low beam headlight passenger side.switch to high it goe out and drivers headlight high comes on.

check if you have a light control module as that is the possible fault.

https://s1.postimg.org/635jzlm5zj/headlights.jpg

Click on the link.
As you can see, the hi--lo beam on the right side uses one ground. The hi and low beam on the left side use a different ground. If I suspect a ground problem, I use a redundant ground to see if it helps?

Headlight switch is worn out, had the same thing on an old Ford pickup truck.

I put aftermarket tail light and headlights LED in my in my truck 06 Dodge Ram 1500 turn signals got hyper flash trying to replace the relay cannot find

HEADLIGHTS NOT WORKING

It can be faulty headlight switch or issue with its wiring. Or its faulty head light fuse.

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To troubleshoot the issue i suggest you few help links with appropriate solution. So you can follow the test and confirm what exact problem is there in your case of headlights not working:-----

Click the link below: -----

All headlights not working?

http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html

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• Working of Headlight switch?
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• Both headlight bulbs blow together?

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• Car headlight bulbs don't last long?

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2007 Dodge Caliber: Low Beam Headlight Not working

http://technoanswers.blogspot.in/2012/06/2007-dodge-caliber-low-beam-headlight.html

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2003 Toyota Camry: Headlights Work Intermittently?

http://technoanswers.blogspot.in/2012/04/2003-toyota-camry-headlights-work.html

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Chevy Tahoe: Low Beam Lamps are not working?

http://technoanswers.blogspot.in/2012/04/chevy-tahoe-low-beam-lamps-are-not.html

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2001 Chevrolet Tahoe: Headlights not coming ON?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-headlights-not.html

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2004 Dodge Ram: High Beam Light is DIM?

http://technoanswers.blogspot.in/2012/04/2004-dodge-ram-high-beam-light-is-dim.html

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2001 Chevrolet Tahoe: Both Low Beam Lamps Not Working?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-both-low-beam.html

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Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

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How to Replace a Headlight

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight.html

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How to Replace a Headlight Bulb

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-bulb.html

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How to Replace a Headlight Switch

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-switch.html

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How to Replace a Headlight Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-assembly.html

How to Replace a Park Light Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-park-light-assembly.html

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Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

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Headlight Assembly Removal On Honda Accord

http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html

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Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html

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How to Replace a Headlight Door

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-door.html

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How to replace HID headlight bulbs for lexus 400h?

http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html

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These will help.

Thanks.

WAY TO GO !!! another "great idea" from vehicle manufactures

The Front Control Module is attached to the under hood fuse block with 4 screws, The FCM is the power supply to the headlamps, if all other lamps are working correctly the concern is most likely caused by a defective FCM. Verify the WT/DB wire, left low beam driver is good. If it is replace the FCM. you can use a FCM from a salvage yard, these modules do not need to be programmed for your vehicle.

Cavity/ Fuse /Circuits
1/ 20 Amp Yellow/ Left High Beam Headlight
2/ 20 Amp Yellow/ Right High Beam Headlight
3/ 15 Amp Dk. Blue/ Adjustable Pedal
4/ 20 Amp Yellow/ Horn
5/ 25 Amp Clear/ Headlamp Washer - If Equipped
6/ 15 Amp Dk. Blue/ Front Control Module (FCM)
7/ 20 Amp Yellow/ Fog Lamp
8/ 15 Amp Dk. Blue/ Park Lamp
9/ 15 Amp Dk. Blue/ Non ABS Brakes
10/ 5 Amp Orange/ Starter
11/ 20 Amp Yellow/ Auto Shutdown/Powertrain Control Module (PCM)
12/ - -
13/ - -
14/ 25 Amp Clear/ Powertrain Control Module
15/ 20 Amp Yellow/ Injectors, Ignition Coils
16/ 15 Amp Dk. Blue/ Powertrain Control Module
17/ 30 Amp Pink/ Antilock Brake System (ABS) Valves
18/ 30 Amp Pink/ Windshield Wiper/Washer
19/ 50 Amp Red/ Radiator Fan
20/ 20 Amp Lt. Blue/ Starter
21/ 50 Amp Red/ ABS Pump Motor
22/ 40 Amp Green/ Radiator Fan High/Low
23/ 50 Amp Red/ High Intensity Lighting
24/ - -
25/ 30 Amp Pink/ Lighting Left High Beam/Right Low Beam
26/ 20 Amp Lt. Blue/ Transmission
27/ 30 Amp Pink/ Lighting Left Low Beam/Right High Beam
if this helps please rate 4 thumbs up.

I had the same problem with my 2004 ram, passenger side low-beam wouldn't work after replacement. Online I saw many things from socket replacement to Fcm replacement. What worked was to remove fcm (front control module) and clean appropriate contacts with small nail file . Repair took less than 1 hour and cost 0$, wish I could give credit where I found info.

I have a 2004 ram 2500 and all my lights work except for low beams. It is not in the switch, I haver replaced the switch with no change. This is a circuit problem with these dodge pickups. I haven't firgured out what it is but it isn't the switch. and unless the low beams and high beams are fused seperate, it isn't a fuse problem either. i have looked for a fuse and can't even find the fuse for the headlights. Im lost like you!