Wonder if anyone has come across this before and can help?........ 1.7\ndiesel cavaliier ( isuzzu engine) starts and runs ok but as the revs climb\nto around 3000 rpm the airbag warning light lights up.( as well as this my\nradio facia glows a lot brighter.) I know that normally an airbag warning\nlight coming on is a known issue on cavs using the isuzzu engine and means\nthat the alternator is overcharging and i replaced the alternator 2 years\nago for the same thing. I have checked the voltage coming from the battery\nwith the car being revved hard and it`s 13.8 volts and doesn`t climb any\nhigher. I changed the charging relay in the footwell and still the same.\nDoes anyone have any ideas on what can or could be causing this?