 | Home > Technical > Difflock light!! |
 
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6486   
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The difflock switch creates a ground path for the lamp and from what you've said it sounds like everything is OK
With the switch connected up are you getting continuity to ground at the blue/black at the dash connector when difflock is engaged?  1988 90 Td5 NAS soft top
2015 D90 XS SW |
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2nd Nov 2015 1:12pm |
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| dave18 Member Since: 11 Jul 2015 Location: Gorleston, Great Yarmouth Posts: 497 
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Cheers for the reply. Yep getting continuity everywhere, that is what's annoying me getting power where should as wel!
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2nd Nov 2015 2:53pm |
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| dave18 Member Since: 11 Jul 2015 Location: Gorleston, Great Yarmouth Posts: 497
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Tried using a couple of different earth locations ( currently earthed to the Transfer Box) but still no luck.
Checked the copper strip on the dash lights and thats all good and working.  |
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3rd Nov 2015 10:56am |
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| Freypal Member Since: 23 Sep 2013 Location: Shropshire Posts: 271 
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Not sure if this is covered by your post above so apologies if it's stating the obvious, but is the switch definitely adjusted properly? You can wind them in and out until the plunger of the switch makes contact with the lever at it's engaged position.
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5th Nov 2015 7:14pm |
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| dave18 Member Since: 11 Jul 2015 Location: Gorleston, Great Yarmouth Posts: 497
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Freypal, Cheers for the reply, Im assuming it is adjusted correct as in normal mode the switch has no continuity but when in difflock I get continuity. Also doesnt explain why the light doesnt come on when I earth the cable !!! Cheers thou
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5th Nov 2015 8:57pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Is there continuity to and from the light board plug on the dashboard down to the difflock switch
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5th Nov 2015 9:30pm |
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| Freypal Member Since: 23 Sep 2013 Location: Shropshire Posts: 271
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Odd, on the wiring diagram power is sent to the switch via the dash so if you're getting 12v at the plug on the blue wire it should work. Can't see how its anything other than the earth from the switch to ground.
What happens if you bypass the switch and try earthling the blue wire directly with ignition on? |
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5th Nov 2015 9:42pm |
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| dave18 Member Since: 11 Jul 2015 Location: Gorleston, Great Yarmouth Posts: 497
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Nothing happens. I've even jumped the from the back of the dash connector to a good earth and tried two bulbs which are working in other warning lights. Bloody annoying
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6th Nov 2015 12:07am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
is possible cct track is open cct on the light board
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6th Nov 2015 12:23am |
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| dave18 Member Since: 11 Jul 2015 Location: Gorleston, Great Yarmouth Posts: 497
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Doubt it as get continuity from the 12v feed on the light cluster all the way to the switch earth when I engage diff lock !!
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6th Nov 2015 1:03am |
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| Freypal Member Since: 23 Sep 2013 Location: Shropshire Posts: 271
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All it can logically be is some kind of short behind the cluster, bypassing the bulb. Is there anything behind that could be doing that?
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6th Nov 2015 9:17am |
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| dave18 Member Since: 11 Jul 2015 Location: Gorleston, Great Yarmouth Posts: 497
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Not that I can see but will check all of them again. But surly running an earth from the blue wires on the dash connector would illuminate the bulbs.
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6th Nov 2015 11:34am |
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| dave18 Member Since: 11 Jul 2015 Location: Gorleston, Great Yarmouth Posts: 497
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Well good ole Landy, Was in the 110 this evening as been doing work on it and had the engine running, Got a power lead caught round the diff lock lever and it got pulled into Diff Lock. And as if by magic the Difflock light came on!!!!! Played with it a couple times and all is well !! Bloody Landy s
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8th Nov 2015 12:06am |
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