Line a baking sheet with parchment paper to prevent sticking and for easy cleanup.
In a microwave-safe bowl, combine unwrapped caramels and 1 teaspoon of water. Microwave in 30-second intervals, stirring until smooth and fully melted.
Place bite-sized pretzels evenly spaced on the prepared baking sheet.
Spoon a small amount of melted caramel over each pretzel, keeping it contained to hold the pretzels together.
Place a whole pecan on top of each caramel-covered pretzel, pressing gently to stick.
Melt the Ghirardelli Dark Melting Wafers in a microwave-safe bowl using 30-second intervals until smooth.
Drizzle the melted dark chocolate over each pretzel cluster, covering the caramel and pecan.
Melt the Ghirardelli White Melting Wafers similarly and drizzle over the clusters for contrast.
Chill the clusters in the refrigerator for about 30 minutes until the chocolate sets completely.
Remove the clusters from the parchment paper and serve.