Headlights out! Help

[PVEPANTHER]

Hi All

Im on a road trip in my 2003 MM - noticed last night that both headlights are out. One fog light (right side) works.

Tail lights, blinkers, side lights, brake lights all work (so am guessing the LCM as modified by FastBlackMerc is not the problem).

Any thoughts on fuses, relays etc?

Thank you

[SilverPhoenix]

OEM or LEDs/HIDs? If OEM, sounds like a possible chaffed wire somewhere. If LEDs/HIDs, could be ballast issue.

[PVEPANTHER]

OEM…both headlights inop.

[justbob]

Hit the bottom of the dashboard where your right knee resides. Probably the LCM.


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[blazen71]

Hit the bottom of the dashboard where your right knee resides. Probably the LCM.


Sent from my iPhone using Tapatalk Pro I love fixes like this ^^^^^^^^

[offroadkarter]

Hit the bottom of the dashboard where your right knee resides. Probably the LCM.


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^this, and curious, does your flash to pass still work? If so, that does indeed sound like a LCM issue and normally you can give it a smack like justbob said to get it to come to life again. Many things on panthers can be "fixed" simply by hitting them.


Since you state your LCM was modified though with the external relay, have you tried removing the relay and jumping the two wires (I'm guessing 30 & 87 but check the relay itself for a diagram) to see if your lights come back to life? It could just be a faulty relay which any parts store would have.

[PVEPANTHER]

Yes, headlight flasher still works

[offroadkarter]

Yes, headlight flasher still works


then the headlight relay in your LCM is acting up

[PVEPANTHER]

Thanks all…when I tried the lights today they came on for maybe 3 seconds and then I could or get them to come on again. Since I have no night driving the next few days will look at it when I get back. Is it pretty easy to replace the relay? Anyone have a relay part number?

Thanks

[offroadkarter]

Thanks all…when I tried the lights today they came on for maybe 3 seconds and then I could or get them to come on again. Since I have no night driving the next few days will look at it when I get back. Is it pretty easy to replace the relay? Anyone have a relay part number?

Thanks

This is the process to repair it so it won't fail again

https://www.crownvic.net/ubbthreads/ubbthreads.php?ubb=showflat&Number=1159835&page=all

[MM03]

FastblackMerc (Jim Marton) can rebuild your LCM
.He’s probably done hundreds of them over the years for members here.


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[PVEPANTHER]

FastBlackMerc did the retrofit on the LCM a few months ago. I will reach out to him as well. Thanks

[PVEPANTHER]

Well in true Marauder style, lights started working today! I need to figure it out as it needs to be a reliable night driver!!

[Comin' in Hot]

I used to kick the LCM, but I've also had both low beams burn out within a day. My advice is to start with the most obvious thing, the bulbs.

[PVEPANTHER]

Sorted….removed the external relay from the LCM pushed the pins in and reseated it, and its all good now! Thanks to FastBlackMerc.

[fastblackmerc]

Sorted….removed the external relay from the LCM pushed the pins in and reseated it, and its all good now! Thanks to FastBlackMerc.

YW!

...............

[PVEPANTHER]

Lights worked for 24 hours….out again. Have reached out to FastBlackMerc…..thinking there is something amiss in the LCM and the mod.