robl- Ive heard of those units before... but never installed one, because of liability reasons... I dont need any law-suits against me from a customers car driving itself into the street and causing an accident, just because they wanted their car to warm up.
There is only one way to bypass the clutch switch... and the switch is on the pedal assembly, inside the dash... there should only be 2 wires comming from it. Locate the switch, and while watching it, depress the clutch pedal to the floor... you should see a long plunger from the switch that becomes fully extended when the clutch is to the floor... that is the switch you need to bypass.
As far as the parking brakes goes, I just locate the wire in the console... its not that hard to take the console off (at least for me its not), it just takes any guess-work out of it. If you want, get the console apart... and trace the wire, see where it goes... and if it goes to the driver side of the dash (which it should), tap it under there so you dont have to run a long wire.
Phreaxer- You can use the above mentioned diagram I listed for Will... there should be all the wires you need, listed there. As with anyone, if you are adding more accessories/options or I forgot something... let me know.
For a head-unit, I recomend using a harness adapter with the EIA standard wire coloring... the wirring of the adapter will match the wirring for an aftermarket deck, so it will basically be a matter of matching colors. I recomend this method, because when you sell the car, all you have to do is unplug your unit, and plug the stock unit back in... plus it makes for a neater job. If you need one of these adapters, they can be found anywhere... or you can paypal me $12 and I will ship you one. If you really want the wire colors for a deck in your car, I will post them for you.