The safest way to install the airbag fuses -
Disconnect a battery cable and touch it to the other battery cable. This will drain all the residual power in the system.
Then plug in the airbag fuses (since the system is void of power, you can fiddle with it and not worry about what might happen.
Then re-connect the battery and test the truck.
Take note of the airbag check light when you first turn the truck on. I should light for a while.