I currently am in this same situation.  Funky Speedometer.  It "sorta" works sometimes; it was perfectly fine until 20 months of inactivity due to car wreck.  I removed cluster, removed the 4 screws, folded back the blue foil.  I gently nudged the needle several times; my thought was that something was bound up.  It moved back and forth nicely; I moved it to extreme limits.  I was thinking it needed some "special" extremely lightweight lubrication that you apply with a toothpick....think watchmaker's oil...on the pivot points.  Well, I don't have any watchmaker's oil, 3-in-1 oil might be too viscous and mess things up.  So me too...I am looking for coaching on this situation.  There is a good speedo shop here in San Diego, and they probably have the correct lubricant.
    On Tuesday, July 15, 2025 at 07:37:23 AM PDT, Mark McCulley <mark@markmcculley.com> wrote:  
 
 Hi all,

Does anyone have experience with the GW electronic speedometer? Or with repairing broken speedometers? Cable seems OK but speedometer has quit working.

-Mark