See Figure 1
A special heavy duty turn signal flasher is required to properly operate the turn signals when a trailer's lights are connected to the system.
Fuses are located in the junction box below the instrument panel to the left of the steering column. The turn signal flasher and the hazard warning flasher also plug into the fuse block. Each fuse receptacle is marked as to the circuit it protects and the correct amperage of the fuse. Inline fuses are sometimes found particularly on non factory installed accessories. Do not use fuses of higher amperage than those recommended by General Motors.