For 1990-2009 cars

1. Buff the repair area using fine steel wool.
2. Solder the rear defogger bus bar lead terminal (4) to the positive electrical connector (3). Use a solder containing 3 percent silver and a rosin flux paste.
3. Use a brush in order to apply the paste-type rosin flux in small quantities to the bus bar lead terminal (4) repair area.

Important: Do NOT overheat the terminal during the resoldering process.

4. Coat the soldering iron tip with solder. Use only enough solder in order to ensure a complete repair. Use only enough heat to melt the solder.