Despite not having a rev-counter, it does receive engine RPM signal. This is confirmed by the dash cluster diagnostics.
If your instrument cluster looses power when the engine is restarting in ecomatic mode, you should try replacing your auxiliary battery.
It has three additional lights:
![Ecomatic control lamp K110 [k110]](./images/smilies/ecomatic%20control%20lamp%20k110.jpg)
![Gear display control lamp K48 [k48]](./images/smilies/gear%20display%20control%20lamp%20k48.jpg)
![Engine running Control lamp K111 [k111]](./images/smilies/engine%20running%20control%20lamp%20k111.jpg)
In addition, the Oil Pressure and Alternator warning lamps are suppressed by the Digiswing control unit when the engine is off in Ecomatic mode.
(my ecomatic has had an easy life!)
pictures of another ecomatic cluster which was rescued from an ecomatic which had been converted to standard drive.
(note 3 ecomatic bulbs are missing)