2022 ram 1500 halogen to led headlight upgrade now the headlights flicker

[BigBlack2022]

I recently had a dealership install led replacement headlamps(TYC) and retroshop wiring harness. My low beams flicker and turn off completely! It happens when I step on the gas and let off the gas. Everything seems installed correctly. And the check engine light came on once and then went off turn a couple days. I tired to turn the check engine light off with a scan tool but it wouldn’t turn off! Then I started my truck and the light magically went out. Any thoughts from anyone about this issue would be greatly appreciated! Thanks!