This is the widest category in the catalog because almost everything that carries current lands here.
Electrical faults are usually diagnosed by symptom rather than by part name, so the specifications matter more than usual. Amp rating on an alternator, terminal count on a switch, connector shape on a sensor and whether a module needs programming are all listed on the product page.
A word of caution on modules: many late-model control modules require VIN programming or a dealer flash after installation. Check the fitment notes before ordering one.
