Yes, you will need the 1) Lazer Linear 18 led bar, 2) wiring kit and 3) CAN reader.
Lazer Wiring kit Single-Lamp Wiring Kit (Low Power, 12V)
If you have and only if you have a pre-facelift X/S can you split the wires and take the signal directly from the wires, otherwise you will need to use a CAN reader. Please note that very new Model 3 might not work with these readers.
The other anternative is to use an ALC box (CAN reader). Our neighbours from Norway have made a direct box without any need to split wires, etc. etc. just pure plug-n-play. Adapter til ekstralys Tesla Model S
This is also what I used. Quite easy to use and fully removable. What is also nice is that blinking five times the left signal indicator turns it off (again 5 times turns it on again). Note that auto-high-beams will not work.
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