Victron energy Venus GX Manual page 18

To start such a genset, the open/close contact needs to be converted into a start and stop pulse.
Below solution, using standard available timing relays, does exactly that: when the open/close contact
closes it generates the start pulse, and when the open/close contact opens again it generates the
stop pulse.
Note that this solution should only be used on gensets that have their OWN control panel monitoring
and automatically stopping on loss of oil pressure and other sensors. In other words: do not wire this
directly to the starter motor and fuel solenoid.
Alternative using Assistants
(provided by Thierry Cortasa)
hi
just for information, one solution using multiplus relay for start stop a three-wire generator. i use k1