Yep, this happens when the right passenger side blinker has a bad ground or the bulb socket is melted allowing a back feed condition when the headlight is on, lets remove the right rear blinker assembly to check it out here are the instructions in the diagrams below. Also, I have included the blinker wiring diagrams so you can see how the system works.
This guide can help as well:
Check out the diagrams. (Below) Let us know what happens and please upload pictures or videos of the problem.
Images (Click to enlarge)
Friday, July 22nd, 2022 AT 9:40 AM