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Subject Topic: LED lights Post Reply Post New Topic
23/1/2008 at 8:00pm
 Location: Norf
 Outfit: Elddis
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Hi all! Right, I know a lot of new vans have LED set ups rather than halogen. Is anyone aware if anyone is selling/manufacturing the halogen shaped bulbs but with LED banks. If not, wouldnt that be a good idea to quickly convert?

The consumption if I remember the posts is around a 100th of 12V halogen. Id like to convert mine if I ever get stranded without EHU.

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*:)


23/1/2008 at 8:01pm
 Location: Norf
 Outfit: Elddis
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Typical - I post this, then stumble across these. I'll check my bulbs on the van and order these if they fit!!!
http://rover.ebay.com/rover/1/710-5232-2978-1/1?AID=9479574&PID=1428744&mpre=http://cgi.ebay.co.uk/B15-Motorhome-caravan-3-x-6-led-MR11-bulbs-boat-12v_W0QQitemZ300193279235QQihZ020QQcategoryZ76066QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Oh and its a 10th not 100th but still worth the money i reckon!

http://www.ultraleds.co.uk/ultra-bright-mr11-acdc-warm-white-bulb-p-1460.html - then I see these which are 20w - a bit dear though...

Post last edited on 23/01/2008 20:07:10

Post last edited on 23/01/2008 20:08:06

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*:)


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23/1/2008 at 8:27pm
 Location: north wales
 Outfit: Sprite Quattro FB
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I would try one bulb first.  I bought one and when I tried it in the van I was not impressed at all.  I took it back to the shop and they gave me a refund.  Some led s might be better than others.  The power saving might be useful if you go to rallies or certified sites without hook-up.

One advantage is that leds run cooler which is less of a fire hazard.

brian



23/1/2008 at 8:37pm
 Location: None Entered
 Outfit: Bailey Pageant Vendee
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Just remember you may want a 'warm light' led to go in the caravan. Most that are sold are 'bright light' which give a whitish/blue light.

Trevor


23/1/2008 at 8:38pm
 Location: Near Bremen Germany
 Outfit: Ci 620 Motorhome on Ford chassis
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Oh, right up my street, this one!

A white led needs a voltage of 3.3v and current 0f 35mA to 70mA. This means you cant connect direct to a 12v supply.

How To:-
Plus 12v onto a 470Ohm resistor connected to the anode of the LED. The cathode goes to minus or earth (chassis).
You can get LED's in 3mm - 5mm - 7mm, 5mm are the ones you want. They are sold mostly with the resistor over ebay. It is easy to see that these very bright little lamps in camping are just the thing. Ten of these things take less current than a 10Watt car bulb. If you use 'Heat Shrink Sleeving' and some very flexible cable.

If all this is as clear as mud to you, then I couls make a picture of a LED circuit, and post it here for all to review.

Hope this helps..........................

Mike


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23/1/2008 at 8:49pm
 Location: south yorkshire
 Outfit: coachman Amara 450
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A white led needs a voltage of 3.3v and current 0f 35mA to 70mA. This means you cant connect direct to a 12v supply.

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yes you do,. the ones pictured in the link above already have the resistors embedded in the base . you just replace the halagen ones direct with led ones

stu



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I predict a riot !!


23/1/2008 at 10:34pm
 Location: West Berkshire
 Outfit: Bailey Olympus 534
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We use led lights of the type mentioned in the reading lamps above out bed as the origonal ran so hot. The ones we have don't have enough output to replace the halogen - looking at the specs of the "ultra LEDS" ones they might.


23/1/2008 at 10:35pm
 Location: Near Bremen Germany
 Outfit: Ci 620 Motorhome on Ford chassis
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I think I explained that badly. The reflector type LED bulbs, the one shown in Sean's link being 4 flat-pack LED's with 120° flood, onto a G4 glass base are indeed 12 v. But, they use an 33mA-42mA 'CLD', see my circuit. This 'Current Limiting Diode' would drive up to 30-40 LEDS. You can get up to 60 LEDS in one glass housing, but to put 60 resistors would not fit in. The reason for the CLD is very simple. The LED is not a bulb with a filament, but a 'Semiconductor'. This means that what you are seeing is chip, glowing when current flows. The amount of current is determine by the chip and is quite fine. Between running and its off state, is something like 2mA to 6mA. And between running and destruction is again very fine, something like 10mA. This all means, that 25mA, no light and 40mA destruction.
I was refering to leds in cupboards, in bed lockers etc. For anti germ in the water I have 6 Infra red diods (10 000MCD), and this does work. I hope all helps





Mike


24/1/2008 at 7:16pm
 Location: Norf
 Outfit: Elddis
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Big Mike is really impressive - however I have not got a clue what this means. The bulbs say 12v - so does that not mean they run off a 12v feed. I like the idea of cooler lamps, and power consumption, even on EHU is environmentally friendly eh?

I know a lot of new vans have them now, so I just want to keep mine up to date. The ones we have in now are too bright, so lower warmer lights may be just the trick. I dont read or anything and we've got 'big light' for take a break and stuff!! hehe

Looks like I may be the guinea pig here then!

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*:)


24/1/2008 at 9:39pm
 Location: March cambs
 Outfit: Skoda Superb MK2 SE & abby vogue 460
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converted our Bailey to them they don't give the same level of light and beware buying of E bay try CAK tankshttp://www.caktanks.co.uk

david

 



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men don't need or read instructions


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24/1/2008 at 9:47pm
 Location: Near Bremen Germany
 Outfit: Ci 620 Motorhome on Ford chassis
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Yes they are, Sean. Most have a G4 or GU10 base, and as a camper I would choose the bayonett type GU10 base. Apart from the base and the wattage, two things to remember.

1. Angle, we use 60°

2. colour. above 6000k is bright-white, and 3000k warmwhite.

Have a look at the web site, it will give you some idea.

LedMeile

I have used a lot of these little leds all over the van, and drag around a smaller battery.

Mike


26/1/2008 at 11:14am
 Location: Norf
 Outfit: Elddis
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Big Mike is now officially the LED expert on UKCS..

Im doing this job this year.

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*:)


27/1/2008 at 4:52pm
 Location: gods country
 Outfit: sorento xt pageant burgundy
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  Have had the reading lights above the bed converted to those, as my oh reads a lot in bed. the normal ones kept me awake, the leds do not. A friend of mine got them from ebay (I think) hope this helps[:)]

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"If he's got 1, i want 1."
Women are like clouds,
!Registered citizen of boloxnia!


27/1/2008 at 8:12pm
 Location: Yorkshire
 Outfit: Car & Caravan
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Old led bulbs worked on 12 volts, caravans electrics are about 13 .8 volts & you needed a separate rectifier so that it didn't blow the leds.

Over the last few years led bulbs have come with the rectifier included in the bulb, so its a case of remove the halogen or filament bulb & fit the led bulb.

If you don't fancy the blue light that conventional leds give off ask for a warm light led bulb

 

paul




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