I am totaly new in “electronics” 
so before I ruin my k8023 I want to be sure that I’m doing the right things.
My project:
I want to connect these relays
to the K8023 in order to run (left/right) 4 x 7Amp 12 Vdc motors.
The whole project is powered with 12 Vdc.
In the assembly manuel I see a picture (page 9) with resistors. If I understand it well, I can do without a resistor between the K8023 and the relay because my whole project runs on 12 Vdc… Or …?
so my question is:
Can I connect the relays to the kit to without any resistors?. If not, can you tell me what the use of the resistor is , and what resistor I need?
Perhabs you have even a better (simple & cheap) solution to control the motors.
thanks for your help