Suzuki DF300 2007 tachometer

[Vesa]

Hello there
I have some problem with Suzuki DF300 year 2007 meters.
I have tachometer, speedometer, trim and fuel meters. Only tachometer is working.

I have measured all the wires and they are OK.
All information goes through the tachometer, so I have come to the conclusion that the problem is in the tachometer.
Has anyone repaired an old tachometer like this? These are no longer on the market.

Thanks for the answers,
Vesa

 

[Vesa]

There are pic for the meters and wiring diagram.

 

[Vesa]

Answering to myself....
I will find voltage supply wire that goes to the tachometer. I'll make a jumper wire between the voltage wires, over the tachometer.
Lets see.

 

[Vesa]

Jee, now it is working.