Wiring for a engine stand

Thanks Mattax ,the relay I was going to use for the cooling fan if needed ,also didn’t know if I needed the starter relay or just the on/off for all main power plus the push button to start the motor? These are spare parts I have to use. Picture should be easier to look at now haha to late for me last night.
What you said take blue up to on/ off switch and pos side does go though 5 ohm resistor but that goes where to ?