Will these plug directly into my truck's wiring harness?

These mount at the factory points, but confirm your harness connector type before ordering. LED assemblies sometimes require an adapter harness or load resistor if your truck still has older electrical architecture — test-fit first or reach out with your truck's year to verify compatibility.

Do I need to remove the old tail lights first?

Yes. You'll unbolt your factory units from inside the truck bed, disconnect the harness, then bolt these in and reconnect. Basic hand tools and maybe 30 minutes per side.

Can I return these if they don't fit?

Returns follow standard modSupply policy. Make sure you've confirmed fitment with your specific truck before installation — once bolted in and wired, we treat it as customer-installed. Measure twice, order once.