
Originally Posted by
ghosthunter
To start, any bulbs with tinted glass will be less bright than a standard bulb of the same wattage rating. Why? ... the tint absorbs part of the light to get the desired effect or color at the cost of LESS light projected to the road.
So buying yellow tinted, or those blue tinted "ultra-white" bulbs will just result in LESS light on the road even if they are rated at 55 or even 100 watts.
You are better off buying standard bulbs without any tint. They generally cost less. If you want brighter, you can upgrade your bulbs to higher wattage bulbs but make sure that your headlights and bulb sockets can take the heat.
You can have relays installed even on regular bulbs. They can make your lights brighter by shortening the distance electricity have to travel from the battery to reach the bulbs. Relays would be essential if you upgrade to higher wattage bulbs.
As for "fog lamps", generally they have their own switch. In my case, they will not turn on unless the "park-light" is switched. This ensures that the fog lamps will not be accidentally left on when parked resulting in a flat battery.