There are some good and some bad options out there for the DRL bulbs
i will cover the best options here.
...The Standard DRL bulbs....
As you will all know are yellow and Dull
and not really up to the job of being a DRL
what more can i say apart from they fit good and that is about it.
W21/5W (580).
....PROLARG/MTEC......
The first white looking bulb and cheapest option here
are the cheap Prolarg or MTEC DRL bulbs you find on ebay etc
they go by many names but all are around the £7.99 to £12.00 range.
These are the cheapest option out there
and you do get a nice white light that are also error free
but the down side is they don't fit well at all
and they have been know to fall out of the DRL holder and in to headlight
and it is a bumper off and headlight out job to get the bulb back out
so if you do go for this option be warned
You get what you pay for.
....PIAA DRL....
By far the best option here is the PIAA DRL BULBS
There are two types the standard Blue PIAA DRL,S.
And then the more expensive mirror PIAA DRL,S.
the PIAA are a bit brighter than the cheep Prolarg DRL,s
and have a bit more wattage but this has no ill effects at all (580) T20 27/8W.
and they are more expensive starting at around £20 for the standard Blue PIAA DRL,s
and around £30 for the mirror PIAA DRL.s they also are error free.
The only real difference is that the mirror PIAA DRL bulb does not look as blue in the headlight
when you look at it as it has a mirrored finish so the blue bulb does not stand out as much.
The fit of the PIAA is perfect and they hold in the DRL holder as well as the standard bulb
and they will not fall out of the holder like the cheaper eBay DRL,S tend to do
They are well worth the extra money for this reason.
....LED DRL,s...
If you have an Astra GTC or VXR then you have the option of the LED DRLS
and they will be error free as the DRL on the GTC and VXR are not on the bulb check
so just put the LED in the holder and job done.
But they only work with out errors in the GTC and VXR.
The Astra J 5 door will get error codes from the LED DRL,S unless load resisters are added to cancel the errors
check the how to section for further info on this under Astra j LED DRL.
http://www.vxoc.org.uk/forum/Thread-HOW-...a-J-5-door
They are by far the brightest option here brighter than the PIAA
they also fit very well in the bulb holder
and go for around £20 to £30 for a good set
but you must find a set that will dim down and not all LED bulbs will do this you need a W21/5W 5050 7443 LED
i recommend the LED DRL,s from HIDS DIRECT
for both the Astra GTC and VXR and the Astra j as they will Dim down for side light mode
and they are very very white with a slight tint of blue.
http://www.hids-direct.co.uk/r580-w21-5w...air-white/
.........FACTORY..LED...........
Then there is the factory LED DRL option
they come with AFL and LED DRL halogen headlights
if you go down this wrought then the LED DRL halogens headlights are needed
but you must also fit the factory LED ballasts to cancel errors
also if these are not fitted there is a real risk of fire
but as yet we dont have a how to on this and this will also be the most expensive option here
............................................................
All the above options are much brighter and whiter than the standard yellow factory DRL,S
and i prefer the LED DRL,s myself but the PIAA are also very good.
if you have any info or need any help with fitting DRL,S or any other bulb
then check the lighting how to section out for more info etc.
http://www.vxoc.org.uk/forum/Forum-Lighting-How-to-s
Or just post your question here in this thread
and it should get answered.