Indicate rs work, but not the lights for speed and rpms

Are we talking about every light in your dash display? (excluding the indicators you mentioned)
First thing you'll want to do is check any fuses that may serve the dashboard lights; your manual will be able to help you that.

. Check all under hood and under dash fuses with a test light or multimeter.

. Check/replace the ignition switch for wear, pitting, or melting.