Okay ever since I go the car 2 airbag lights have been on, I understand that when they are on the airbag system is disabled. Today I noticed that only one light is on (the one on the left), what exactly does that mean... my dad just recently hooked up a switch so my window wash would work, could that of caused the change? I just want to make sure its safe to drive. BTW its a 1990. Thanks in advance.