Hardware

Actuators

I bought these relatively cheap actuators (I first got the 5-wire ones, but ended up only using two of their wires)

Then I just used some thin sheet metal to mount the actuators in the doors and laid their wires to the trunk.

Control electronics

For controlling the door actuators I'm using two relays and for the trunk actuator only one since it only needs to unlock.

//TODO: Update image

Here is an overview of all the electronics: