brian47
Well-Known Member
The main problem with replacing filament bulbs, halogen or xenon with LEDs is the actual position of the light source.
Both the reflector and the fluted lenses (except the D2 Facelift) of headlights and spot lamps are designed for the light source of a bulb. The placing of the light souce from a LED or multiple LEDs will be different and will not produce the correct beam pattern.
Modern headlights; HID and LED are in most cases projector type installations with an appropriate type of lens to produce the correct beam pattern.
This subject has been discussed on numerous occasions.
Both the reflector and the fluted lenses (except the D2 Facelift) of headlights and spot lamps are designed for the light source of a bulb. The placing of the light souce from a LED or multiple LEDs will be different and will not produce the correct beam pattern.
Modern headlights; HID and LED are in most cases projector type installations with an appropriate type of lens to produce the correct beam pattern.
This subject has been discussed on numerous occasions.
What do you want from your lamps?
I ask as there seems to be so much garb fitted without need or in effort to compensate for other issues, or just for the blingy talking point and following all the other lost sheep
If you have poor lamps and dim lights then try to rectify the problem with the amount of power reaching the lamps before going for easy option of higher wattage lamps as this often does the opposite, it makes things worse as power draw is higher than before excacerbating the issue.
Putting your lamps on relays will help no end in ensuring switch longevity and full power at the lamps, not expensive, and even ready made cable looms available to make fitting very easy.
steveyorks
Well-Known Member
I swapped my last Disco to Osram night breakers. Made a difference.
I have read on a few forums that fitting relays combined with Osram Night Breakers is the best and above all the legal way to go.
Look in the CFAQ section
relays do not increase power.
That's energy conservation screwed then !!
discodrivercumbria
Well-Known Member
brian47
Well-Known Member
then I shall re phrase
I have used relays to prevent old cables (mk1 golf gti i think) causing resistance and reducing the power being received by the bulbs
I think what you're trying to say is that using relays allows for heavier gauge wiring to be used which can carry a larger current and those relays can be positioned "electrically" closer to the lamps; altogether reducing the resistance between the battery and the bulb and therefore the voltage drop across the wiring. It also reduces the possible problems associated with the stalk switch working near its limits.
Thomo1927
Active Member
I've always used 100w H4 bulbs bought off EBay , Very bright and don't seem to bother any other drivers on the road H4 100W Xenon Super White Bulbs & 501 Bulbs For All Car | eBay
1. They are illegal to use on the public highway.
2. They will burn out your switch and wiring.
Does the Disco 2 not use relays anyway for the headlights? Or is the suggestion that the relay is moved physically closer to the battery and lights to cut down the cable loss?
Off topic, but I had to fit relays on my MGB, as all all the power to the headlights went through the stalk. Once the contacts get a bit dirty the resistance increases, causing local heating and then the plastic part of the stalk that the contacts are riveted to melts and all the lights go out, which makes thing quite exciting.
Off topic, but I had to fit relays on my MGB, as all all the power to the headlights went through the stalk. Once the contacts get a bit dirty the resistance increases, causing local heating and then the plastic part of the stalk that the contacts are riveted to melts and all the lights go out, which makes thing quite exciting.
Thomo1927
Active Member
discool
Well-Known Member
As they are not to BS or E standards are you sure their 100w rating is true?
Why should there be wiring problems with 100w lamps the circuits are 10amp fuse rated ... Unless there's a bit of unqualified DIY wiring in the mix
So you have been breaking the law for years. Not something to brag about is it?
Thomo1927
Active Member
I aint worried at all.
But the poor fecker yo have an accident with, who finds you are uninsured, will be. I hope they throw the book at you.
Prat
But the poor fecker yo have an accident with, who finds you are uninsured, will be. I hope they throw the book at you.
Prat
