96 x auto on headlights

I've got a 96 X Limited with the auto on headlight feature. The auto on doesn't work anymore. I believe the problem is the photo cell in the dash . It looks like mine is between the passengers airbag and the windshield. Does anyone know how to gain access to the cell without setting off the airbag?? Am I headed in the right direction? I've changed the diodes in the master box under the hood and the fuse in the fuse box checks out all right.