okay so i ordered some new halo headlights. i what to install the HID lights. i need help on where i should secure the balist. thankss ive got a 2004 5.4

 

year of your truck would help determine the responses you get

 

I mounted the driverside under the inlet tube for the intake. There is a threaded nut already welded in there, youll see it. On the pass side, I mounted just under the washer fluid reservoir. You can get to it after removing the headlight assembly. Use a self tapping screw