I USED THESE FIREWALL GARMETS WELL FOR THAT REASON TO RUN WIRES THREW THE FIREWALL OF MY TRUCK SO I COULD HOOK UP MY LED LIGHTS FOR OFF ROADING THEY WORK GREAT AND WERE EASY TO INSTALLI HIGHLY RECOMMEND THEM
Pros
Grommet Kits
Cons
The grommets can be difficult to install, especially for people who are not familiar with car or machine repairs