@SMalafy , In my opinion, the second generation truck has one of the worst two-bulb headlights systems ever designed. There are three basic flaws:
1. A long ground circuit of undersized wire starts from the bulbs in the engine compartment and passes through the headlight switch and multi-function switch in the cabin and eventually leads to a ground.
2. A 9004 bulb is used. This bulb offers only 45 watts on low beam! Standard low beam wattage is 55 watts.
3. The reflectors inside the headlight housing are of poor design. The reflectors by design should put the light onto certain areas of the roadway and to the sides of the roadway. The OEM reflectors do not do this.
Whether you use the Brite Box or a relay system as
@GAmes has shown, this will take care of #1 and will show an improvement of light output, but it will not help with #2 and #3.
The Sport headlight system is an easy and cost effective modification - especially with a 2001 truck. It is a four bulb system and the reflectors are designed to put the light where it should be. Both low beams and high beams light up the sides of the road well. And, because four bulbs are used during high beam, the roadway and the sides of the roadway will be especially well lit.
If you decide to go this way, everything can be purchased through Geno's, including an installation write-up from the TDR. Because you have a 2001 truck, I don't think you will have any metal cutting to do. Also, don't be tempted to buy headlights from other sources that have cheap prices- the bargain prices will be reflected in the reflectors - pun intended.
In order for any bulb to display its full light output (in lumens), the bulb must receive a specific voltage at the bulb with the headlights on and the engine running (battery voltage approximately 14 volts. That rated voltage is:
* 12.8 volts (USA bulbs)
* 13.2 volts (European bulbs)
If you were to check this voltage at the bulb on your truck, you will probably find that it is around 11 volts or less. This means that your current lighting system would be reduced to less that 50% of its lighting capacity in lumens. This is why relays will significantly help.
- John