You've got that wired correctly. Put some electrical tape on those two bulbs. It's a shame you don't have an ohm meter to test the circuit. You could tell whether or not it's going to work.
As far as the clock, are you talking about slot fifteen of the cluster connector? You could leave that wire out, but it's hot all the time so you better tape the end with electrical tape. As far as sticking a ground wire in that slot, I wouldn't.
Now, let's check the radio wiring. The harness comes from the factory with a black connector that fits into the back of the stock radio. That connector has three or four wires depending on whether or not you have a power antenna. I'm going to assume you don't have the power antenna.
You should be able to locate that black connector in the area under the dash behind the radio area. If you can't see that connector (which means it's probably been cut) look for unconnected yellow, black and gray wires. The yellow wire is switch powered and powers the radio, black is ground and gray lights the front of the radio. It sounds like you've got an aftermarket radio, so you need to locate those three wires to see if they've been spliced to power your new equipment. When radios are installed, the installers like to cut and splice, and they may not know exactly what they're doing. Locate those three wires for me.