timm1960 - This
AD Speedometer Freshening thread from a little while back has a ton of info related to speedometer removal, repairs/maintenance to the unit including stuff on replacing the needle.
I couldn't find a specific video demonstrating needle replacement. Perhaps another Bolter has a link to one they can share?
Hope the above linked thread offers sone needed help.

BTW - Your topic best fits in the
Interiors forum, so your thread has been moved there.