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WOODLAWN, ONT

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99 ram headlight problems
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Helping my buddy trying to figure what is the reason for one of his headlights is dim on L/beam and when switched to H/beam the opposite light is dull. The H/beam indicator is on regardless of which position the dimmer is in. There is always power to outside pin of the connector so I'm thinking that the dimmer switch grounds the lights? Also when we disconnect the two plugs at the lights the H/beam indicator does not light up when in L/beam position. Any help is appreciated. thanks.



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STROUD, ONT

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On the surface, it sounds like a bad ground. I would check the power and ground in the plugs with the headlights disconnected.



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DUNDAS, ONT

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You should be able to google a wiring diagram . but I would think its the dimmer switch. the old floor switch would go dead when they craped out and that was fun at night. . Its going to be powered all the time because of the D R lights ( low voltage High beams ) which  would be the second place to look if the switch Ohms out good



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DUNDAS, ONT

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Just highlighted and  hit search on your subject line  and came up with this

http://dodgeforum.com/forum/2nd-gen-ram-tech/390430-99-ram-headlight-problem.html



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STROUD, ONT

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slim wrote:

Just highlighted and  hit search on your subject line  and came up with this

http://dodgeforum.com/forum/2nd-gen-ram-tech/390430-99-ram-headlight-problem.html


 Just wanted to thank Slim for that link! Since I have no imagination, I never would have realized that

 some headlights are wired differently internally! Must have been something Ford came up with! Anyway,

thanks Slim, you are always there to help, we need more people like you on here!

The original poster didn't give a whole lot of information as to the symptoms, eg. if one the headlights had

been replaced, if the Day Time Running Lights worked properly; so it is really hard to diagnose the problem

without being there and seeing for yourself. a good lesson for future posters with problems. Having said that,

if the O.P. does what I suggested in my first post, he could tell if the problem was with the headlights themselves,

or the dimmer switch, or the ground in the harness coming out to the headlights.

Thanks again Slim!



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St THOMAS, ONT

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Model A Guy wrote:

thanks Slim, you are always there to help, we need more people like you on here!


 


 Wash out your mouth with soap. One is bad enough.nono



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DUNDAS, ONT

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Thanks for your support John.  A quick look at the dodge forum and its clear they seriously undersized the hole circuit But only recalled the one tons . melted wires, switches , plugs are a common problem .



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WOODLAWN, ONT

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Thanks for the info, I will pass it on. It is not always possible to give all the details when I don't know what to look for until informed of what to look for.

 

I had searched online for wiring diagrams and could not find any that had constant power to the bulb, just wiring like I am used to on older systems. 

 

The feed to the bulb wiring posted on the form page by "spillage" is not the same as on the his 99 which has constant power to the bulb, even with the light switch off. Where the 9004 shows ground his wire harness is 12V+.

 

None of the 99 wiring diagrams show voltage to only one pin, they show separate power to each filament  of the bulb and one ground out which no one has commented on.



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DUNDAS, ONT

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This would explain it. Difference between a 99 and 2000. you have to remember that most stuff off the net comes from the US . Canada has the mandatory D R L so the wiring is going to be slightly different. My guess would be dodge has gone to the Joseph Lucas school of wiring .

http://www.ramforumz.com/showthread.php?t=67690



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WOODLAWN, ONT

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Forgot about this post. The problem was someone put the wrong bulb in the light and when the correct bulb was put in the low/ high light was working properly.



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