Eberspacher d5wsc Wiring

[Tomtom39]

Hi all.
Ok some guidance or suggestions would be great
I have a Eberspacher d5wsc hydronic that I have now plumbed in to my boat. I would like to wire up to my timer (easy start t) which is actually a simple timer that does on/off and duration, you can link it to other functions like diagnostic etc but I am initially wanting to start and stop the Eberspacher. I have separate thermostats in the cabins link to the heating matrix to control cabin temp so will allow the Eberspacher to run to 80 degrees and then cut out.
Right on to the wiring
I have connected the red wire to positive and the brown to negative so all ok to this point direct from the batteries with an inline fuse as mentioned in the booklet.
Now the question arrives.
I was going to connect the timer to the negative and positive so that should give the timer power and then connect the yellow wire from the heater to the switching wire on the timer.
Should that in short start and stop my heater.
I understand that there are many other cables that you can connect for diagnostic, fans etc... But would the above explanation start and stop my heater?
Thanks again
Nick