The turn signal switch is located at the top end of the steering column and is operated by the multi-function control stalk, with the hazard warning switch mounted underneath it, next to the ignition key light. To begin, disconnect the negative cable from the battery and remove the steering column lower cover. Unplug the turn signal switch electrical connector and use an ohmmeter or self-powered test light to check for continuity between the indicated switch connector terminals, replacing the turn signal or hazard switch if the continuity is not as specified. For replacement, disconnect the negative battery cable, then remove the steering wheel and detach the wiring harness trough from the steering column. Unplug the electrical connector and remove the wiper/washer switch pivot screw while leaving the control stalk in place. Remove the three screws to detach the turn signal switch, carefully pulling the wiring harness out through the top of the steering column. Installation is the reverse of removal, ensuring to lubricate the steering shaft contact surfaces with multi-purpose grease and to securely locate the dimmer switch rod in the pocket of the control stalk.