Searchlight Simulations Enhancement Pack

I saw a few videos on the packs, and noticed that they have enhanced headlights. But whenever I install the pack the headlights don't change. How could I change them?

 

Go into the route editor and select the relevant Searchlight Simulation DLC.

 

Ok, I'll try it

 

where is the route editor?

 

In TS2022. It's accessed through the build button on the main screen.