Recently I acquired a 1970 cutlass supreme in Australia. Speedo / Odo wasn’t working. Removed dash faceplate and speedo/odo/gear indicator cluster. Speedo cable not connected! Unfortunately the plastic assembly that controls the PRND needle at the back of the cluster was perished and disintegrated upon removal. Does anyone know if / where I can get this part. OPGI don’t seem to stock it.

 

Welcome to the site! If you'll consider a good used part create a parts wanted thread. There are several members here who can sell you the piece or a new speedometer pod you can either use for parts or replace yours with.