If your talking about the low beam lights going out, then insulating the fuse panel may help, but the real cause of that issue is a break in the ground wire for the headlight circuit. With enough circuit heat, the broken wire expands ever so slightly, and breaks the circuit, thus the lights go out. When the circuit is cold, they work fine.
The real solution is to fix the broken wire, or get a new fuse panel which will eventually have the same problem down the road.
There is a DIY fix for the issue done with pictures by a forum member.
I copied it and made a PDF from the data.
The member who posted the data is mentioned in the PDF
here is the thread