I’m only saying to stay off of the airbag circuit in general, especially for a DIYer. I’m honestly not sure how the indicator circuit would be tied into the rest of the airbag circuit without seeing a schematic of the specific car, but I wouldn’t risk it. It’s like the number one rule in install bay.

Chiming in for anyone who might see this. Please don’t tap power from the airbag circuit. Sending power or ground, even using a test light, on the wrong wire could cause your airbags to go off. Wires in yellow/orange plugs and loom are a no no.

Source: professional installer for 20+ years.