I recently installed this speedometer

In my Nissan B12, but as all of us know the work quality of our electricians. They just cut all the wires and then only connected the ones they know about. I am damn sure that this meter has more functions but no body is understanding upon its proper wiring. The main issue is this that meter only works when ignition switch is in ON state, i want it to work on Parking Lights also.
Secondly the ODO Meter gets reset upon switching off the engine. Means that meter have some memory wire to keep the record safe. I have found the below manual for this meter but its in russian language. Can anybody translate this for me.

Thanks in Advance.
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