Replacing Speedo Clocks

Hi,

I have a Micra K11 1 Litre. I have bought Speedo Clock off a 1.3 different K11 Micra which also comes with a Rev Counter. If I plug this clock straight in will the rev counter work straight away or will extra wiring etc need to be added.
The Standard 1 litre K11 Micra's just come with a fuel gage, temp gage and speedo clock.

Any help would be great.
Thanks
 
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