Panel lamps out - fuse OK
If only your cluster lights are not working...your right it's not the fuse, however there's a good chance that the cluster connector pin is loose. These are not getting any younger and the pins tend to come loose on the board itself. #1. Firstly without removing your cluster or connector, (if dark enough), turn on your parking lights and reach up under the dash from the right side. (Yes it's tight)! Feel around until you can touch the back of the connector and "gently" give it a slight push or a canting motion. If your lights flicker or come on...that's your problem area. #2. 75..could be different..You may have to remove your light switch as (1) of the spade pins in that connector go's to your cluster for "ONLY" the panals instrument lights. It may have shorted or even fallen back not making a connection. You should be able to remove the light switch by reaching up and pushing on the little button to remove the light knob itself by pulling it stright out, then remove the hold on nut with needle nose pliers. The switch and connector should fall out and down behind the fuse box. If possible pull it down a little more so you can inspect the connectors female spades to ensure their not loose. If your cluster has to come out....have a voltmeter and check to ensure you have 12V coming out of the connector (with parking lights on). You can tell which pin it is by looking at the back of your cluster and following the light bulbs "runs" to which pin. If you find your connector has 12V......Then it could be a shorted run between your clusters pin and your first inline bulb on the circuit board.
Blah-blah, but I hope it helps some!