Compact and portable flasher units in the canister shape are used in the electrical circuits of the directional signals and hazard lamps. However, when used as intended, one gets a clicking sound when the circuit is on. When the turn signal operates on one side only and the flasher unit cannot be heard, the problem is a burnt-out bulb; if the chinking of the flasher can be heard, there is a problem in the wiring. If the turn signals are on both sides and the turn signals are not flashing it might be as a result of a blown fuse, faulty flasher unit or switch or a faulty or loose connection and if the fuse is blown the wiring should be checked for short before fitting a new fuse. The hazard warning lamps are checked in the same way but the hazard warning flasher unit may be situated in the fuse box by the left side of the dashboard whereas the turn signal flasher can be found in the fuse box or at the underside of the lip of the instruments panel. Before replacing either of these flasher units, one is supposed to purchase a unit of the same capacity as this guarantees the new flasher to be appropriately replaced.