See Figures 1 and 2
The hazard flasher is located forward of the console on all N-Body vehicles. The turn signal flasher is located behind the instrument panel, on the left side of the steering column bracket. Replace the flasher by unplugging the old one and plugging in the new one. Confirm proper flasher operation.
Relays are located all over the vehicle. Each relay is an important part of the electrical system. Inspect and replace any relay that may be in question.
Some relay schematics are etched on the outside of the relay. This is useful in identifying the relays.