My wiper knob on dash fell off on my 1941 Buick and i'm not sure how it hooks up to I see a rod with a u shape at the end and the piece under dash has a plastic round spacer like thing with a eaised portion on it. on the bottom is a flat strap with a hope in it so I have 3 pieces total Knob spacer and metal piece. Any info will help Thanks Jeff jthdpanhead@yahoo.com