In addition to circuit breakers and fuses, some circuits use fusible links to protect the wiring. Like fuses, fusible links are one-time protection devices that will melt and create an open circuit. Not all fusible link open circuits can be detected by observation. Always check that there is battery voltage past the fusible link to verify continuity. Fusible links are used instead of a fuse in circuits that are not normally fused, such as the ignition circuit. Service of Saturn fusible links are by replacement only. When replacing a blown fusible link, use only parts purchased from an authorized Saturn Retailer.