insomnia816 wrote:I am looking for either whiter (5~6k) halogen or led bulb replacement to rogue's original dull yellowish DRL (canadian model)?
insomnia816 wrote:I just need to figure out the percentage of the lumina I am looking for. The packaging on the bulbs usually dont list lumina, instead they list as percentage.
Hi insomnia816 ... The problem with "Percentage" of light output is its a relative term and will vary by manufacturer. It's not an ideal way to determine what bulb you want or what you will end up with because advertised "light percentage" is not a regulated measurement of light output. For instance... let say I'm a headlamp manufacturer. I could say my bulb is 40% brighter than a stock filament headlamp... but thats an empty statement (marketing hype) because you don't know "whose" stock headlamp I am comparing mine to. As a manufacturer it would be in my best interest to compare my headlamp to the dimmest stock headlamp on the market. I might even be able to say mine is 60%, 80% or even 100% brighter. (But brighter than what?)
Your best bet may be to shop on line. There are tons of reputable suppliers online where you can find plenty of information on the various bulb types and manufacturers... and in the end... you will know what you are buying. It would be a shame to lay out good money for something that doesn't deliver the results you were hoping for.
To make sure you get the desired light output after your modification you really need to know the Kevin rating of the bulb you are buying. Why? Two reasons. 1) Because as the Kelvin goes lower, the light shifts from blue/white... to yellow. 2) Because as the Kelvin goes higher the less light output (lumens) you get.
As you go above 6000K you begin sacrificing light output. 4300K is typically considered to be the standard because it offers the highest light output (number of measured lumens) On the downside the 4300K lamps are considered (by some members) to have a slight yellow-ish tinge. For the people who find the color unattractive 5000-6000k is a better choice. In this range the bulbs offer a "whiter" light output yet only sacrifice a little in the lumen department.
The idea offered by Pescakl1 (i.e. installing an 8500 Kelvin lamp so it will operate at the half rated output)... seems like a good idea however without testing it, I'm not sure if the voltage to lumen output is a one to one ratio. In other words I'm not sure dropping the voltage by half will yield 4250 Kelvins. If another member has done this please let us know.
In the meantime, here's a visual reference for the Kelvin ratings: