Connecting light bar to D4 with Bi Xenon

[haydndeane]

Hey guys, Installing a new Stedi light bar to my 2015 D4 with Bi Xenon. Wiring harness piece for the high beam trigger has two wires (Black + Red). From what I can see on previous posts I need to tap into the Blue/Grey wire for the trigger (Which I assume I'd use the red wire). I assume the black wire on the harness is for the earth? Do I need to get this earth from the headlights? It's a plug + play kit but obviously this is not possible with the Xenons so just working out what I tap into. Thanks guys, Cheers Haydn

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[Graeme]

The earth pickup can be from any earth stud on the body, just don't connect it to the battery terminal. All the headlight connection earths go to a body stud.