Will these bolt straight into my factory headlight location?

These are designed as direct replacements for the original Peterbilt 359 headlight buckets. Your existing mounting points should align — test-fit before final installation to confirm bracket compatibility.

Do I need to prep or paint the chrome housing?

No prep needed. The chrome finish is ready to install as-is. If you prefer a different look, the housing can be sanded and painted before mounting.

What bulbs and wiring do these require?

Bulb type and wiring specifications are determined by your truck's original electrical setup. Confirm your stock bulb size before ordering, and have a basic wiring harness ready if your truck doesn't already support projector-style headlights.