Cadillac STS-V Series Forum Discussion, True Correct Fog Light Lights Bulb Number? in Cadillac V-Series Forums; I need new HID fogs for my V. The ones I have now are going out/flickering.
The problem is I ...
I wasn't sure in your original post, if you meant you were converting them to HID's.
Yes, I've already replaced one on mine and stocked up on a few extra 9145's because typically when one goes, both go. But so far, the other hasn't. I guess I'm spoiled compared to my Bonneville GXP before it, in that getting more than a month of life out of an H3 bulb in the fog light of that car, you were on borrowed time.
I can't speak to the conversion. If a 9145 converts to a 9005, look into an HIR bulb instead. I can never remember if it's an HIR-1 or an HIR-2, but I think an HIR-1 (you may also see it referred to as a 9011), is the equivalent to a 9005. You may have to grind down the tabs on the bulb a little, but that bulb will generate about 2,500 lumens (I think, memory fails me right now) of light output vs. what, 1,900 on a 9005? It has a kelvin rating of 3,600k and may not look completely "HID" (Our D1S's are 4,300k), but certainly performs a heck of a lot better than a 9005 without the cost of going full HID.
GM uses them as high beam applications in many vehicles, including my aforementioned Bonneville. I also converted the low beam 9006's to HIR-2's.
With that said, when I convert to 6,000k D1S bulbs in my low beams, I plan on doing HIR-1's (already have them waiting) in my highs, replacing the stock 9005's.