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Subject Topic: LED lights Post Reply Post New Topic
Persondaforfar
16/12/2019 at 8:34pm
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I have a Lunar Quaser 5 year old and require help over the strip light in bathroom vanity unit.it is not lighting I have checked voltage no 12v I have put a pp3 across it and it works .
Can anybody supply a wring diagram or advise the route the wiring takes or what is can be.


PersonG#Winger
16/12/2019 at 10:17pm
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has the light got its own itegral switch, or is it switched from a remote switch.
if it has a remote switch , start there, and test for 12v there.
if it has its own switch, then 12v supplies are generally "jumped" from one light fitting to another.check the nearest fittings ,and see if a wire has come loose there.
stu

-------------
I predict a riot !!


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Persondaforfar
16/12/2019 at 10:53pm
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it has a separate rocker switch and i have checked no voltage on it my problem is where
does the feed come from to there.


Persontango55
16/12/2019 at 11:03pm
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The first place to check is the 12 volt fuses as it may be just a blown fuse that needs replacing.


Persondaforfar
via mobile 16/12/2019 at 11:27pm
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It’s the only light in van not working


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Persontango55
16/12/2019 at 11:50pm
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Quote: Originally posted by daforfar on 16/12/2019
It’s the only light in van not working


Maybe it is the only 12 volt light in the caravan not working but it may not be on the same circuit as the ceiling lights therefore it will have an independent fuse. It won't do any harm anyway just to have a look at the fuses to eliminate the source of the problem as most faults are usually just a simple solution. Once the fuses have been checked then it's time to check the switch to see if that is faulty and finally the light itself and check that all the contacts are clean and secure. Basically it's a process of elimination before looking for problems with circuitry wires and cables.



Post last edited on 16/12/2019 23:54:22


PersonMonty15
17/12/2019 at 1:34am
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My 2016 Quasar has the wiring circuit diagram in the owners handbook, try looking in your handbook. If you haven't got a handbook you can download a PDF version from https://www.lunarcaravans.com/help/handbooks-guides.

Your van differs from mine with it's fittings, so I can't make direct comparisons to assist further, other than say the low current drawn by LED lights is often too low to keep joints and switch contacts clean of minor surface oxidation, which can then lead to apparent failure of lights. I've had to tweak a number of mine to restore brightness or get lights working again!

It's bad practice by manufacturers (in general, not just caravans!) who don't choose the correct switch contact design/materials and connector types for low current devices (old fashioned bulb higher currents had a tendency to blast through any minor oxidation and keep working), simply substituting LED lights for incandescent or fluorescent units without matching the whole system to the current demand is poor sloppy design!

Good luck.


Persondaforfar
via mobile 17/12/2019 at 8:03am
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We where away recently I left the vanity unit light on and went off for half an hour when I came back it had gone off
I being ex electrical tech checked all the fuses below the bunk ok
Then I check for 12 v on switch no voltage
Put a voltage source across light works
I think I need to get into the switch and trace wiring back


Person664DaveS
via mobile 17/12/2019 at 10:47am
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Have you bypassed the swich? This will eliminate it.
If you have no supply at the input to the switch it has to be a disconnection somewhere.
We had an Abbey GTS many years ago which lost 12v. The wiring diagram showed fuses, I checked them all except one I could not find!
Eventually found it, a line fuse under some trunking in
the front bed box!
A sticker was put on the trunking and handbook annotated.
You may find the designers have done the same with yours.

-------------
DS-There's more to life than football!!!


Persondaforfar
via mobile 17/12/2019 at 2:44pm
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Just revealed back of switch no voltage present my problem now is where does voltage originate from prior to here


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PersonG#Winger
17/12/2019 at 11:17pm
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how are you checking for 12v at the switch? how many wires are on the switch?, to test for 12v at the switch you may need to run a long negative lead, back to the battery , or to a known good negative wire.
stu

-------------
I predict a riot !!



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