what year did GM change them ? I am trying to firgure out what year this dash harness is that I have based on a few things about it.

First of all it is a airbag harness but what could be the give away is its vats starter enable relay and I'm hoping this will tell me what year the harness it. this relay is rectangular shaped much like gm's old fuel and fan relays, however Ive seen a 92 firebirds relay and its alot different, I know this starter enable relay is identical to an 89's ... so does anyone know for certain when the changed the style of this relay.

I'm thinking this is a 1990 harness since it has air bag stuff and the older enable relay