Unscrew the three bolts, take out old tail light, add new tail light, and screw in the three bolts. Assuming the tail lights you bought are OEM or have an OEM wiring harness.

If not then you may half to do some cutting and splicing to add the non oem tail lights. I do not suggest this route.

Good luck,
Austin

__________________
Dear Mr. F-150,
I may only have 225 hp but I sure owned you back when it snowed.
Regards,
X5 3.0i Bellevue, WA

p.s. with Toyo Proxy s/t's on