Car relays

[Too Late]

Hi all


My head is hurting and i am going round in circles for a pet project i am working on

I basically want to trigger a door opening at the point of the unlocking of the door.

So when power is sent to the door actuator, i would like to simulate the door opening.




So the brown feed will from the actuator will go into relay 86
Relay 85 will be ground
Relay 87 will be the door trigger input
Relay 30 will be ground

Am i right in thinking i ground the + feed into the relay at 85?

Thanks
Nick