can i run these bulbs with out burning up my factory wiring harness?

http://www.4wheelparts.com/Lighting-...out#ReadReview

if i need to upgrade the harness what all do i need? thanks people

Do you already have H4 housings, or still running sealed beams?

Regardless, to run that wattage I would recommend an upgraded harness so that the 12 comes to the headlights by way of a relay rather than through your switch.

yup i just ordered up the eautoworks harness. i also ordered ipf housings