Two years Update!
The instrument cluster has been working Great since the Retrofitting, But some months ago, it developed a fail on the Tachometer needle, which drop dead suddenly; but I fixed it easily, see:
Kind Regards.
The instrument cluster has been working Great since the Retrofitting, But some months ago, it developed a fail on the Tachometer needle, which drop dead suddenly; but I fixed it easily, see:
Except that minimum episode, everything has been working Flawlessly.And I Found the Culprit!
The thin plastic that has the electrical tracks, behind the instrument cluster, sends the Power, Ground and info for the Tachometer, also to the Speedometer and the rest of the Gauges, via long Screws, that touches those tracks and sends the signal to the gauges' system.
Those contacting screws were Loose, very loose...
...those loose contacting screws made the Electrical False Contact. I only needed to clean their contacting surfaces and place them there, very Tight.
Voilá! ... Problem: Solved.
Kind Regards.