I don't know if anyone posted about replacing a seat before or not but it's only 4 bolts and 3 plugs(if you don't have heated seats). 12 mm head on rear bolts and 14mm(9/16") on front 2 nuts. One plug looks like it might be for a seat position or weight sensor on the front rh side of the track, another for seatbelt buzzer, and the yellow plug for the seat airbag. Call me careless but I didn't put unhook the battery, wear an ant-static strap thing or even a wear my tinfoil hat when I unplugged the airbag. Just don't turn the key on when the seat is all unplugged or you'll have to get the codes cleared.
Airbags are kind of idiot proof so that when you unplug one they have a spring loaded metal tab or wire that jumps the two wires of the bag so you can't accidentally blow one off with it unplugged.
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)