The flasher unit in a 1993 Jeep Grand Cherokee is
not a visually distinct component with a specific "look." It's a small, usually black, rectangular electronic component, about the size of a pack of chewing gum or slightly larger. It's typically located within a fuse box or relay center, often hidden from view under a panel or behind other parts. It doesn't have any identifying markings that scream "flasher relay" to the untrained eye; you'll need a wiring diagram or a repair manual to positively identify it.
Think of it more as a small electronic box, rather than something with a particular shape or easily identifiable features. You'll have to trace the wiring from the turn signal switch to find it.