The original installer does require admin rights to run (it writes only to FSX folder), but modern malware will ask for elevation.
Remember, the magic of 3D lights isn't the installer itself—it's the volumetric glow on a rainy approach into London Heathrow at 2 AM. Fly safe, and keep those lights bright. -FSX- Shockwave 3D Lights Redux -Installer- Free
Back up your original Effects folder first, and run the installer as administrator. The original installer does require admin rights to
You can find the full installer at the following official storefronts: A2A Simulations : The original developer offers the FSX version for Steam Store Back up your original Effects folder first, and
Developed by A2A Simulations (formerly Shockwave Productions), this add-on completely overhauls the visual appearance of aircraft lighting in FSX and FSX: Steam Edition.
If you want better night atmosphere in FSX without spending money, grab this. Just scan the installer with your antivirus (mine was clean, but be careful where you download from).