You can't solder them on.I found out you'd have to heat the entire glass up to temp. The frost fighter uses an epoxy that has silver in it to conduct electricity. It's silver in color too; can't tell it's been repaired. You can even mask off the entire area where the tab mounts and spread it out with a putty knife and stick the tab in it if the tab tore off a big piece of the mounting area. That's what I did after I tried soldering and then the loctite. Mine was messed up pretty bad from my fails but frostfighter fixed it up. I was looking at $200 for a used glass that might lose a tab at any time. I figure if it's old like mine, what's to say the tabs will stay on much longer.