That site also has info on what kinds of bulbs/lights are good, too. I replaced the original GE bulbs with Sylvania XtraVision bulbs. They are a lot better.
If you plan on using bulbs that are rated at higher-than-stock wattage, make sure you upgrade your headlight wiring harnesses - otherwise, you'll melt them and possibly start a fire.
Whatever you do, don't touch the glass bulbs with your fingers. You'll get oil on the bulbs, which will cause them to burn out faster.
If you do get blue bulbs, though, I'd reccomend the show off light bulbs. I've had em in mines for a month, and they have been great. They put out a tiny bit more light than my old crummy halogens, and are pretty friendly towards others.
A forum community dedicated to Ford Thunderbird, Mercury Cougar and Lincoln Mark owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, maintenance, and more!