There should be two screws on the little plastic cover between your cluster and the dash. Take the screws out and pull out the plastic piece. Then pull out the whole cluster. There will be some plugs connected to it that you will have to unplug before you can pull the whole cluster out. Pop off the clear plastic piece and then the back face cover. You should have access to your gauges now. You want to just lay those gauges over top of them, don't pull the other ones off. Then just reinstall everything.

If it came with a dimmer switch and color change switch then you just run the switch through the back of the cluster down around your steering bar (i guess that's what it's called) and mount the switch somewhere convient. I dont know which wire, and where it's located, is your parking light wire.. but you'll want to splice the switch in with it and find a good ground spot for the other wire.

Hope this helps.