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Electrical Issues - Dim headlight
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Author:  Red_October [ Thu May 20, 2010 10:15 am ]
Post subject:  Electrical Issues - Dim headlight

Car: 90' Sierra

My right headlight is only receiving 6v. (normally it should be 11v-12v) I've gone over all connections (unpluging, cleaning, repluging) but all seems fine. Even though the bulb was 100% I replaced it for good measure but to no avail. Fuses are all okay. I've spent 3 hours going over it and cannot for the life of me figure out what it could be. I'm thinking of taking it to an auto-lekky to share the pain. Any suggestions as to what it could be?

Cheers,
Jimmy

Author:  89_tintop [ Thu May 20, 2010 10:17 am ]
Post subject:  Re: Electrical Issues - Dim headlight

you wil find 2 fuses for the headlights..

one for the left and one for the right.. one of the fuses is blown.

Author:  royce [ Thu May 20, 2010 10:19 am ]
Post subject:  Re: Electrical Issues - Dim headlight

does the highbeam light on the dash stay on too?

Author:  steak_knife [ Thu May 20, 2010 10:27 am ]
Post subject:  Re: Electrical Issues - Dim headlight

royce wrote:
does the highbeam light on the dash stay on too?


& if it does??? :?

Author:  eldo [ Thu May 20, 2010 10:29 am ]
Post subject:  Re: Electrical Issues - Dim headlight

steknig wrote:
royce wrote:
does the highbeam light on the dash stay on too?


& if it does??? :?

you will have a blue light on!!

Author:  suzibob [ Thu May 20, 2010 10:30 am ]
Post subject:  Re: Electrical Issues - Dim headlight

89_tintop wrote:
you wil find 2 fuses for the headlights..

one for the left and one for the right.. one of the fuses is blown.


Yes and actually pull these fuses out and check because they will test fine with a light even though 1 is blown. - draws current from otherside.

Author:  Red_October [ Thu May 20, 2010 10:36 am ]
Post subject:  Re: Electrical Issues - Dim headlight

Two fuses 8O :oops:

Are they both located in the fuse box in the drivers foot well?

(High beam dash lighht functions normally)

Author:  royce [ Thu May 20, 2010 10:45 am ]
Post subject:  Re: Electrical Issues - Dim headlight

steknig wrote:
royce wrote:
does the highbeam light on the dash stay on too?


& if it does??? :?


when the tail light fuse blows the high beam light comes on on low beam and the drivers headlight comes on dim, got me buggered how, I tend to see how electricity works but cant figure this out

Author:  steak_knife [ Thu May 20, 2010 10:51 am ]
Post subject:  Re: Electrical Issues - Dim headlight

royce wrote:
steknig wrote:
royce wrote:
does the highbeam light on the dash stay on too?


& if it does??? :?


when the tail light fuse blows the high beam light comes on on low beam and the drivers headlight comes on dim, got me buggered how, I tend to see how electricity works but cant figure this out


That's a good one. 8O :?

must try to draw current through the high beam circuit.

Author:  89_tintop [ Thu May 20, 2010 11:05 am ]
Post subject:  Re: Electrical Issues - Dim headlight

Red_October wrote:
Two fuses 8O :oops:

Are they both located in the fuse box in the drivers foot well?

(High beam dash lighht functions normally)


yeh they should be next to each other

Author:  Ben_Sierra [ Thu May 20, 2010 12:24 pm ]
Post subject:  Re: Electrical Issues - Dim headlight

royce wrote:
steknig wrote:
royce wrote:
does the highbeam light on the dash stay on too?


& if it does??? :?


when the tail light fuse blows the high beam light comes on on low beam and the drivers headlight comes on dim, got me buggered how, I tend to see how electricity works but cant figure this out


I noticed this before... Got an electrical engineering degree but its got me buggered too...

Author:  bron5on [ Fri May 21, 2010 3:46 am ]
Post subject:  Re: Electrical Issues - Dim headlight

Another vote for the head light fuse. Had the same problem, one headlight would be bright for a second then go dim. One fuse was knackered, took me a little while to suss it out too!

Author:  Red_October [ Sat May 22, 2010 7:43 am ]
Post subject:  Re: Electrical Issues - Dim headlight

Yup, it was a blown fuse. It had such a small crack that I missed it the first time. Thanks for everyones advice :P

Author:  Collo [ Thu Nov 17, 2011 2:08 am ]
Post subject:  Re: Electrical Issues - Dim headlight

Can someone please inform me where the fuses are located for the L/R headlights? I'm having all sorts of troubles. The passenger side parkers work, but no response from normal and high beam. Thanks in advance.

Author:  royce [ Thu Nov 17, 2011 2:17 am ]
Post subject:  Re: Electrical Issues - Dim headlight

they are towards the top left side of the 2 rows

if you have no lights at all you could look at the dip switch too, specifically the earth from teh column

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