will the factory wiring harness handle the power that the piaa lights will draw , the factory bulb is only 37.5 watts . Thank you for your help

 

If these PIAA's are 55 watt I would think you would be just fine. If you want to be even safer, you could just use a relay to power them. If you have any voltage drop in your trucks wiring, this would also 'fix' that.

Hey, let me know what you think of the PIAA's bulbs. I'm curious what you think of their life.