Make current sensor and voltages sensor

Hello, I am building a hub to check the voltage and current of sensors, pixhawk and computer hardware (jetson nano or rassberypi) and of course my engine, and send the values ​​to the ground station using a telecommunication pack I designed. but my challenge:
I want these values ​​to be sent to the pixhawk in addition to being sent by my board
But I did not find a safe way
I can’t use the voltage current sensor module, my current choke will reach 140 amps in an instant, so those sensors won’t be able to handle that current.

I have seen that my pixhawk 2.4.8 power port has a voltage data check wire and a current data check wire, but should
1 Is it enough to just give the output of the current sensor to that wire?
and for voltage
I don’t know what combination of resistors to use so that I can give the desired voltage to the pixhawk, because if I increase my maximum voltage of 14.3 to 3.3 with the combination of resistors, the pixhawk may recognize it as a 16V battery.

Or should I use mavlink or mavros?

I am using STM32F030F4P6 core

And I use ACS758ECB-200B for current sensor