need wiring help with covan gauges

[Moose]

I'm ready to pull my hair out with the stock gauges and harness. The problem I'm having is, I can not get any interior lights to work on the gauge cluster.

I've replaced the light switch. I also have afteramrket gauages and they also do not have any lights working. (tach, oil pressure and water temp..)

If I buy the covan gauages, how can I get around this??