Will these bolt straight into my existing fender holes?

Yes — they mount at the factory side marker position with no drilling or modification. Test-fit before final installation to confirm alignment with your specific vehicle condition.

Do I need to solder or splice wiring?

The LED housing connects at your factory marker light connector. No wiring work required if you're replacing existing side markers. Confirm your connector type matches before ordering.

What's the lifespan of these LED units?

LEDs typically outlast OEM incandescent bulbs by thousands of hours. No filament means no burnouts — they'll outlive the housing itself under normal conditions.