Couple things. Do you want the lights to stay on when the headlights are on and flash when the turn signal is on? Normally people pick one or the other or they just tie into the park lamp circuit because that should be on with the head lights and flash the turn signal.
The reason is, if you use the headlamps and turn signal then you are going to have to interrupt the power or ground for the headlamps to flash these LED's. It can be done but most people end up messing things up because it is pretty extensive.
If you want to test this you need to put your test light on the light blue and white wire on the BCM then turn the head lights on and it should illuminate then turn the left turn signal on. Then do the same on the dark blue and white wire for the right side.
Keep in mind the Left turn wire is on C5 and the right is on C4.
Let me know what questions you have and we can go from there.
Images (Click to enlarge)
Tuesday, November 17th, 2020 AT 9:27 AM