This is an add-on for the Interior Lights & Emblems mod, this add-on ensures that you can activate the interior light via the beacon key instead of activation via the low beam. You need original mod Interior Lights & Emblems:  -Compatible with all scs trucks -Scania RS & R4 (RJL), Scania T & T4 (RJL), Volvo FH16 2013 (Ohaha), MAN TGA (Madster), Ford F-Max (SimülasyonTÜRK), Mercedes Benz New Actros 2019 (Actros 5 Crew), Mercedes-Benz Actros MP2 (Dotec), MAN TGX E6 by Gloover, Next Generation Scania P G R S (Eugene), Volvo FH 2020 by KP TruckDesign Rework (Sanax) You need Cabin Accessories DLC