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Topic: LED bulbs (Read 3573 times) |
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EinA
Junior Member
1996 Scorpio 2.9 24V LPG
 
Posts: 53
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Hi All,
Has anybody tried the replacement LED bulbs for dash lighting. (clock etc).
i.e. if they work hopefully never having to change them again 
David
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daven
Guest
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Snoopy - I think David was refering to the LED bulbs as an alternative to the ones fitted!?
Can't remember anyone trying them - some of the bulbs fitted in the dash are smaller - not sure if they can be supplied in LED?
Daven
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Snoopy
Administrator
Very old.BAD tempered and missing friends.
Posts: 6278
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Re: LED bulbs
« Reply #3 on: Feb 2nd, 2005, 4:27pm » |
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Sorry if I misunderstood ! I'll go back to sleep again .
LEDS ! before my time!  
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johnv
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hey, i have been meaning to ask that. On Ebay,(o god not ebay again) there are like tail light blubs, and rear light blubs and all sorts of outside light blubs, but I thinking Not headlight blubs that are led replacements for the normal light blub.
Does anyone know if they are worth having, they cost a fair bit, but I think lots of high end cars have these as standard.
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craig
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john
IMHO i think the only led ones worth having,are the brake light ones (another plug for halfords ,they are currently selling the PAIR for £9.99),not too bad at that price,in theory they should last a lot longer,and they do make your brake lights slightly brighter....
HTH
craig.
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craig
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not so sure about the LED'S fitting the dash,in total behind the dash,there are 10 bulbs all together..
4x large (finis 6329989)
and
6 x small (finis 7096694)
if contemplating replacing 1 of them due to it not working,replace the whole lot,ok a little costly,but nothing worse than replacing 1 faulty 1,and a couple of weeks later,another 1 has gone.....
good luck with it all....
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daven
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Hi David,
No the wedge ones won't fit - the Scorpio ones sit in a plastic bayonet! The ones on Ebay (7950784221) are the wrong way round as well! they are more like this :-
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=72238&i tem=7950719553&rd=1
I have a spare of one of the large ones if you want it to compare before you go pulling the dash about!?
My local shop didn't even carry them so it was FMD that supplied mine!
Also I agree with Craig - do the lot and they should last a few years if you are lucky!
Cheers
Daven
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daven
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Hi David,
Well you live and learn - sorry mate didn't know they do that! 
Below is a picture of one of the bulbs I took out, I think it was the bigger of the two but may be wrong!
I can't see any markings but it the bulb is 15mm long by 5mm at the wedge the bulb being 6mm!
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Geoff_W
Senior Member
98 Ulti2.5tdi Auto
Posts: 1340
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Re: LED bulbs
« Reply #12 on: Feb 3rd, 2005, 9:18pm » |
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If the LED bulbs are brighter, whats that going to do for your night vision?
On the Mk3 there was a dimmer for adjustment, but the Ultima just has one light level (full on).
Has anybody come up with a work round on this one?
Sounds like one for Jamie Austin
I like the idea of LED bulbs in the rear light cluster, must pop into Halfords to see if the offer is still on. Also like the idea of xenon H1 s in the Front(seem to remember Oddjob got them for about £7.00 a bulb from a V**X***L dealer , see and be seen 
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The winding road goes on and on... or at least it does in Northumberland
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Paul B
Senior Member
'98 24V Ultima saloon
Posts: 2442
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Re: LED bulbs
« Reply #13 on: Feb 3rd, 2005, 9:27pm » |
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Ah, you mean a rheostat control Geoff.
I think this idea died a death because it would be too complicated. Something to do with the multiplex wiring or something. 
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Geoff_W
Senior Member
98 Ulti2.5tdi Auto
Posts: 1340
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Re: LED bulbs
« Reply #14 on: Feb 3rd, 2005, 10:00pm » |
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Paul your right, I remember now.
ok I can see how a variable current draw might be a problem with Multiplex,with Multiplex also carrying the signals from the motion sensors that trigger airbags, seatbelt pre-tensioners, fuel injection/pump cut off and I think locks in a major impact.
So I guess we would need to find a way to dim down the LED, maybe paint/whitewash type thing or
Get the benefit of longer life without wandering around with loads of white spots in front of the eyes.
Geoff
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The winding road goes on and on... or at least it does in Northumberland
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EinA
Junior Member
1996 Scorpio 2.9 24V LPG
Posts: 53
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Re: LED bulbs
« Reply #15 on: Feb 3rd, 2005, 10:30pm » |
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just been looking at this RR site
http://www.rangerovers.net/repairdetails/binnacle.html
and they have little silicone sleeve's that fit over normal bulb's
I would have thought the manufactures of the LED's would have thought about how bright they are. Or maybe use red or green ones
Electrically the only way (I think) would be to drop the voltage for the led.
David
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Geoff_W
Senior Member
98 Ulti2.5tdi Auto
Posts: 1340
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Re: LED bulbs
« Reply #16 on: Feb 4th, 2005, 12:04am » |
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David,
Silicon sleeve would do it. Question is where do we find them.
This has suddenly become more interesting from my point of view as my clock light failed today. I know that the only way to sort that is a dashboard strip so might as well replace all my bulbs at the same time.
Geoff
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The winding road goes on and on... or at least it does in Northumberland
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EinA
Junior Member
1996 Scorpio 2.9 24V LPG
Posts: 53
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Re: LED bulbs
« Reply #17 on: Feb 4th, 2005, 12:20am » |
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Geoff,
I got the same, with the clock which started me off on this thread.
I thinking I'm just going to order some anyway and see how bright is bright.
I don't think any of the bulbs shine out directly so maybe easier to cover whats in front of the bulbs.
There are two reviews on the LED site, Though they are different cars they don't mention to much brightness
Maybe I'll test'em on my Granada first as that dash is half in bits already. Then the Scorpio if all ok.
David
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daven
Guest
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So was the picture of any use? - if not I will take it off so as not to slow the board up!
Quote "ok I can see how a variable current draw might be a problem with Multiplex,with Multiplex also carrying the signals from the motion sensors that trigger airbags, seatbelt pre-tensioners, fuel injection/pump cut off and I think locks in a major impact."
LEDs won't affect any of this will it? Hate to think an airbag going off because of an LED!! (will put ther question to Jamie via the Mlist!)
Cheers
Daven
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daven
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Answers from the Mlist
1
If you have the correct led with the correct current limiting resistor,
either integral or fitted in series ( R=(13-Vf)/If ), for dash
illumination I cant see a problem. I fitted green leds to the heated
seats switches, not the on indicator, but the back lighting. One guy
Rae I think, did his in blue.
A thing to remember with Brake/Rear cluster, the reason they haven't
been used by car manufacturers much to date, is the inherent thermal
shut down, this can be as low as 60C, apparently an attainable
temperature in a closed cluster in direct sunlight.
Jamie
2
Any work behind the dash carries some small risk of setting off the bags,
nothing to do with whether you are replacing the blown bulb with a normal one
or an LED.
Is the Scorpio dash lighting regulated? If it is, to +12v, a +12v LED ought to
just slot straight in, electrically, bearing in mind there are usually regular
and extra bright to choose from. The wattage is usually lower than a normal
bulb so there's no problem with current. There'd be no difficulty hooking up a
few outside the dash to get an idea which type will best suit for brightness,
and whether they blow when hooked up to the cigar lighter socket.
If it's not regulated, a glass bulb is nominally +12v but will work ok up to 16
or so, whereas a +12v LED will just dink out of service when the volts get up
to the higher levels. This might be be an issue with replacing them all and
finding out they all go dud at 80+ mph in the dark.
Martyn H
Hope this helps
Daven
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