To find the fuse, you need to:
1. Consult your owner's manual: This is the most reliable source. It will show you a fuse box diagram and specify which fuse is for the convertible top.
2. Check the fuse box under the hood: This is the most common location for power fuses, though the convertible top motor might have a separate relay or fuse in the passenger compartment.
3. Check the fuse box inside the car (usually under the dash): Some models place smaller fuses related to accessories inside the cabin.
4. Look for a fuse box diagram: Often, the inside of the fuse box cover will have a diagram showing which fuse controls what.
Without knowing the year and model of your Cutlass, it's impossible to give you a precise location.