Product comes with all the parts needed, some kind of instructions, even on the site, would have been helpful.
Its 2 clip things inside the wheel well to access the bulb. I did have to work to get one of the bulbs in tight enough to work, it won't flash for turn signal if it is not in.
Resistor instalation was a bit tricky, I found a video on YT,
"How to Install Resistors for '18+ Jeep JL Wrangler & JT Gladiator LED Turn Signals | Diode Dynamics"
That goes step by step. Even looks like these bulbs are the ones they use.