Headlight Knob Catch
This '92-96 headlight knob's collar was broken away, allowing a better view of the catch. Earlier knobs don't have the collar, so their catches are almost visible.
To release the knob from the shaft, use a pick in the slot provided to press the catch rearward (toward the knob) as you pull the knob rearward. To install, align the triangle socket with the shaft and press the knob onto the shaft fully. If the knob pulls off without a tool, bend the clip slightly as shown in this pic so it catches the shaft better.
Older knobs (including wiper, fog light, & HVAC) are retained similarly.
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