How do you replace speedometer in 1982 jeep cj7?

To replace the speedometer in a 1982 Jeep CJ7, first disconnect the negative battery cable to ensure safety. Remove the instrument cluster by unscrewing the retaining screws and carefully pulling it out from the dashboard. Disconnect the speedometer cable and electrical connectors, then remove the old speedometer from the cluster. Install the new speedometer by reversing the steps, reconnecting the cable and connectors, and securing the cluster back into the dashboard.