Dash lights stop working - 1999 GMC Sierra

The fuse gets power from the head light switch when the switch is in the parking lights or head light position. That fuse also powers the radio an climate control lights as well. You will need to turn the head light switch ON to get power to the fuse.
If I remember correctly, there is a dark green wire from the switch to the fuse and from the fuse a grey wire to the lights (in case you start tracing wires) The fuse gets power from the head light switch when the switch is in the parking lights or head light position. That fuse also powers the radio an climate control lights as well. You will need to turn the head light switch ON to get power to the fuse. If I remember correctly, there is a dark green wire from the switch to the fuse and from the fuse a grey wire to the lights (in case you start tracing wires)