84 gauge cluster lights?

[04 Diesel]

I'm having problems with my lights in my cluster, all other lights work, seat belt, glow plugs, temp gauge light, the two main ones in the cluster are the ones that dont work. So at night I cant see my main gauges, one side used to work but I took cluster out and put a new speedometer cable in, while I had it out I cleaned all contacts. Now both the main bulbs dont work, they are both new bulbs and I tested them before I put them in. Not sure what to do next.