Anybody got any tips for threading wires through the front seats for the installation of LCD headrest monitors?

I have an 06 Euro Lux (leather seats and side airbags) - I'm not sure whats in the seat and whether its better to thread the wires down the inside (towards centre console) or outside (towards door) headrest poles.

Didn't want to go poking with a coat hanger yet in case i end up triggering the seat airbags hahaha...

Anybody got experience here and can help me out? My kid is dying to see the wiggles from his seat!

Thanks in advance.