Predpostavljam onda po Arnijevom komentaru da bi i ovaj mogao raditi.
Ovaj bi mi vise godio,jer vanbrodski motor ne ide preko 7000RPM
https://www.ebay.com/itm/2Inch-52mm-Universal-0-8000RPM-Blue-LED-Car-Tachometer-Tacho-Gauge-Meter-White/332548226629?hash=item4d6d6b3e45:g:HZ8AAOSwXtNafDCy&vxp=mtr2Inch 52mm Universal 0-8000RPM Blue LED Car Tachometer Tacho Gauge Meter
Feature:
100% brand new and high quality.
High sensitivity,precision and easy operation.
Used to measure the RPM of automobile engine.
Blue light on the dial for easy clear reading in the darkness.
Suitable for 4,6 and 8 cylinder engines.
Specification:
Material: plastic+metal
Item color: white
Dia: 2"/52MM
Voltage: DC12V,max 0.3A
Reads: 0-8000 RPM
Fitment: universal fit 12V vehicle
Wiring:
Black - negative
Red - positive
Green - speed signal
(Note: It is not suitable for diesel vehicles, and please allow 1-2cm error due to manual measurement.)