@ stranger729
my 1996 mini pajero was having noisy speedometer cable ,
i opened its both ends (gear box and cluster ends) lubricated the center of cable with a solution made up of grease and WD-40
inserted through a large sized injection...problem resolved...
caution : you need to move internal spring cable hence and forth , very gently to get the solution fully inserted throughout the cable
i also did replace a few blown out bulbs in the cluster...
hope fully it will resolve all your issues...
these videos help you safely open cluster and cable gear box end...
https://www.youtube.com/watch?v=toaLegEPbiI
https://www.youtube.com/watch?v=lfe2HcG_Q64