[289ACE]

Atlantacobra,
There a couple of reasons you may not have light, 1 is no lights and the second is no ground. I have seen a couple of different versions of Smiths gauges and 1 has the light as part of the gauge (some slip in and some embedded), and the other has a bracket that holds the light off to the side and the gauge body has slots in the side that allow light in. In either case it should be an easy check to see if the lights are present or not. However, if you have the gauges that use the external light, the brackets can be tough to find.
The other potential problem is the ground and there should be a daisy chain between the gauge bodies that ultimately attaches to a ground wire.
Good Luck,
Jay