Just started doing this, when I shout off the vehicle the speedo starts tapping at a quick pace. Just a tiny rapid tic tic tic ... You can see the speedo arm hopping... It happens when I start sometimes too. The tach does not engage and the speedo starts that tapping for a minute or so then it kicks into normal function, very strange... Any suggestions or help would be greatly appreciated
MrMikeFla@aol.com

 

Loose electrical connection would be my guess