There is a button on the side of the switch and if you depress it the knob will slide right in. Reach up under and press it with your thumb. It's on the left side of the switch in about the middle and it's about the size of a pencil eraser.Here's a pic. Good luck.

http://chevy.tocmp.com/1949_53shop/12electrical/12_46.HTM

Curt


1952 1300 Canadian 1/2 ton restomod
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