Trailer lights

[Jerry Ray]

My truck is an 03 3500, I am having a problem with the trailer lights, on both my flat bed and covered trailer. I'm pretty sure the issue isn't with the trailers, given the fact that they worked fine with my old dodge truck & neither work now. The trailer brake shows the trailer connected. Any suggestions?

Another request for information, would any have or know where I can get a drawing for the electrical connection? Where the trailer plugs into the truck.

Thanks,
Jerry

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Jerry

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Last edited by Jerry Ray : 11-09-2009 at 03:08 PM. Reason: Adding information

[cummins04]

check fuse 33 under hood for running lights

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04.5 quad cab short box, 3805 superchips, mp-8, 2 inch leveling, 4" to 6" aussies, silencer ring mia, modified air box,smoke switch Never ending process----

[Hoffa_49r]

95% of trailer light issues that I have experienced are with the ground wire problems. Try checking the ground terminal on your truck and check where the wire grounds to your truck. May be the ground wire is broken somewhere on your truck.

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'04.5 2500 QC, SB, SLT, auto, 4x4, 3.73
41" Donaldson w/CAT MIA & 5" custom tip, 2nd gen intake horn, smoked RECON cab lights, SRT-10 pillar pod w/Dipricol pyro

[guinness765]

Originally Posted by Hoffa_49r

95% of trailer light issues that I have experienced are with the ground wire problems. Try checking the ground terminal on your truck and check where the wire grounds to your truck. May be the ground wire is broken somewhere on your truck.

I completely agree. i spent days trying to figure out why my trailer lights were doing crazy things. in the end it was a grounding issue, in my case the ground on the trailer

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05, 2500 5.9L HO. Quad Cab SB 4x4 straight piped, AEM intake, silencer ring MIA, smarty jr, leveling kit, 33's, custom front skirt and side rail lights,airhorn

[Jerry Ray]

Thanks for the input. I will check the ground. The fuse is good.

Jerry

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Jerry

[Jerry Ray]

Looking for a drawing where the tailer connects to the truck.

Thanks,
Jerry

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Jerry

[rpage]

heres the color codes for most plugs, tm- brown, rt-green lt -yellow, a/s blue, gd is black or white

[StillTooSlow]

See if you have power at the plug in on the truck....you might not. If so it could be the lighting module under the fuse box. This was the case with my buddy's 03 and the case with my tail light (also an 03). My $0.02.....just wire around the problem with a relay, etc rather than spend hundreds replacing the junk computer.

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'03 2500 QuadCab 4x4, Banks SixGun, Smarty, 5" Straight Pipe, AFE Stage 2, Banks Intercooler, Dunrite VB-Triple Disk-Flexplate-Billet Shafts, Snow Perf. MPG-MAX water/meth, Airdog 150, DiPricols,....90s, 425s, Arson3, and Wicked Stocker/S400 on the way!!!!

[Jerry Ray]

Thanks for the information. I don't understand why dodge invest so much time and money into a truck with this ability and then cuts corners.

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Jerry

[Greatsoil LLC]

i have the lamp out sign on my dash panel and i cant seem to figure it out, i checked all the fuses and also replaced any bulb that was out and still the lamp out remains on. i think its maybe the flasher relay itself is out or half bad but cant find it anywhere! any assistance would be appreciated

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2003 Ram dually 3500 crew cab
everything stock

[Jerry Ray]

Thanks for the suggestions. Ground issue fixed.

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Jerry