98 Camry lowe control arm

My Camry the control arm is history. I have the new one in place but the one bolt on the back side on the arm is a bear. this is the one that go in from the bottom with a nut on top. there less then a 1/2" space to get your finger in to line the nut up and no way to see. so is there a trick to get this bolt started on that nut?

Never done one on a Camry but I'd try an extendable magnet.