Yes sir!
I didn't want to tap into factory wiring for the LED turn signals and I already had the CURT for my tailgate light bar.
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I have 3 relays installed for my grille guard LEDs, a master, one for my DRL and one that kicks on my off road lights when I hit my high beams.
The thing with relays is they retain an electrical charge, so using a relay for a turn signal might end up with a turn signal LED continuing to light after the factory signal disengages.
I'm sure there is a creative way around that though!