Replace signal switch in 1984 Cadillac Fleetwood?

To replace the signal switch in a 1984 Cadillac Fleetwood, first disconnect the negative battery terminal for safety. Remove the steering wheel by taking out the retaining nut and using a steering wheel puller if necessary. Next, detach the turn signal switch from the steering column by removing the screws, and then carefully disconnect the wiring harness. Install the new switch by reversing the disassembly steps, ensuring all connections are secure before reassembling the steering wheel and reconnecting the battery.