new and in need of help to disable backup airbag power

1993 aerostar,link between the shift lever and the lever that connects to the cable (shift cable)Broke can do the work to repair but need to disable the alternate power supply to the airbag
friend tried on another vehicle and wound up with a broken nose
(was right over the wheel)
Can Any one help

Questions about airbag systems are asked a lot in this site. Check out this website for many of your answers
http://www.airbagsolutions.com
In addition, the purpose of this website and company is to help people diagnose and repair airbag problems themselves without taking them to the dealer (if possible). It offers all the photos and data you need to understand your airbag system, read the codes and reset the light. It’s a pay site, but it certainly is worth the money ($14.95 for 1 day full access)
There’s a place to check if your car is listed on the home page
http://www.airbagsolutions.com/vehicles_list.aspx
and a working demo @ http://www.airbagsolutions.com/demo.aspx that shows just how easy these repairs can be.
This is quite an extensive website with pictures, descriptions and factory fault code charts as well as videos of both accidents and airbag deployments on these pages:
http://www.airbagsolutions.com/resources.aspx
http://www.airbagsolutions.com/movie.aspx
http://www.airbagsolutions.com/movie9.aspx

It also has a lot of information for you to check your own vehicle, like the recall search pages for both the USA and Canada:
http://www.airbagsolutions.com/nhtsa.aspx
http://www.airbagsolutions.com/Canada.aspx


Lots of insurance companies and body shops use this site for the information they need to repair your car.

I hope I helped you