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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Headlight failureViews : 757 Replies : 6Users Viewing This Thread : |
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Jun 7th, 2020, 18:42 | #1 |
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Headlight failure
My off-side dipped headlight has failed. Bulb and fuse are fine, I assume it is a wiring issue. I can’t see anything obvious. Any suggestions? Thanks.
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Jun 8th, 2020, 08:39 | #2 |
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Headlights
Do you have any form of tester?
My first check would be to see if there is voltage at the bulb holder terminal. If there is then check that the bulb holder has a good earth. If no voltage then check to see if there is voltage at the fuse. Both in to and out of the fuse.
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Jun 8th, 2020, 09:37 | #3 |
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As above - totally agree. If you don't have a multimeter, they can be bought very cheaply, and are an extremely useful thing to have around the house.
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Jun 8th, 2020, 11:19 | #4 |
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Known issues with the wiring harness degrading, especially towards the bulb side. Gives shorting and grounding issues, which stops the light working.
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Jun 8th, 2020, 18:16 | #5 |
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Thanks gents. I have recently bought a multimeter, this sounds like my first opportunity to use it. I’ll take a look at the holder and fuse box and see what I can find. Cheers.
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Jun 15th, 2020, 08:15 | #6 |
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The back of the headlight switch can separate from the front, which might cause missed connections.
Does the switch feel floppy? I haven't done it for a while, but if you can get the switch out of the dash, you will see what I mean. If possible you want to reach behind and push it out, rather than pry it out from the drivers seat. HTH Steve
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Jun 17th, 2020, 07:04 | #7 |
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Thanks Steve, I’ll give the switch a tweak. It is only one light that doesn’t work, so I had assumed it was local to the lamp, rather than at the switch.
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