Here is the wiring diagram for a Greenfield Evo 3 Mk 2:
[Linked Image]
[Linked Image]

As you can see, it is not exactly wired up like a 787, it is pretty rudimentary stuff.

Here are some Evo 3 models, including one with an hour meter:
[Linked Image]
[Linked Image]

Can you match one of these diagrams to your mower?