air bag light

i get airbag light when starting and it seems to flash a code 37. blinks three times quick pause then seven blinks,does anyone know what this code is for and would i be able to repair it myself thanks k

Check out this link: http://wiki.answers.com/Q/What_does_air_bag_code_37_mean_on_1999_Ford_Explor er_and_how_to_repair_it_cheaply

If you are working on your 99 Windstar, the code you mention refers to a problem with the passenger airbag circuit. The complete fault code chart can be had at this site (for a small subscription fee)
http://www.airbagsolutions.com
it will not tell you how to fix it, but it will identify the circuits and fault codes for almost every vehicle. Check out the free demo page:
http://www.airbagsolutions.com/demo.aspx
and see if you vehicle is listed before you buy here:
http://www.airbagsolutions.com/vehicles_list.aspx