First diconect your battery,then take out two allen key bolts one either side behind the wheel take them out,pull the air bag plug out,take off the the big centre nut.
It is the air bag that you are realesing when you take them out,once yo get there there is a plug going into the back of it take that out and you will have the air bag in you hand.
After fitting an aftermarket one (im guessing without an airbag) a bigger worry would surely be avoiding a crash rather than a resistor to stop the air bag light being on the whole time...