Cozzar

Sadly It isn’t possible at the moment I’m afraid

July's update is still in the unstable release which means you need to have unstable activated. To activate follow these steps:
- Load up steam and head to your library
- Right click on Flashing Lights and then select "Properties"
- Head to the Beta tab and in the drop down select "unstable_test_branch" (no password needed)
- This will then download the new update for you

- You need Unity Asset Bundle Extractor (UABE) which can be downloaded at https://www.flmods.com/files/file/194-unity-assets-bundle-extractor/
- And whatever mod you want to download. 
 
To help with actually installing them you can refer to this links, select which kind of mod you want to install and it will send you to youtube for a video guide.
https://www.flmods.com/forums/topic/45-all-available-video-tutorials/
 

There's also a step by step written guide located at
https://steamcommunity.com/sharedfiles/filedetails/?id=1411062152
 

It’s a .rar file, you need either 7zip (https://www.7-zip.org/download.html) or winrar (https://www.win-rar.com/download.html?&L=0) , once you open it with one of them file openers then you’ll get the texture files, this is done so it’s one single download and not downloading them all individually.

Hi Irish,
 
If you are trying to install character mods there's a step by step video  tutorial located here: https://youtu.be/0iMt3W4_9fM
For vehicle modifications one can be located here: https://youtu.be/zhyCx3YNhrA
If you need the names of the mods, they can be found in the useful information section of the forum.

https://www.flmods.com/forums/topic/4-character-file-names-location/
https://www.flmods.com/forums/topic/3-vehicle-file-names-location/