Well, sorry, but I don't have any schematics. But if you read the code, you will see there is no complex wiring used at all.
Only the IR beam is not so easy but that was jus a little kit I bought so you can look that one up at:
The rest is just simple push buttons and flip switches. Wiring up the 7 segement displays is also very simple and there is a good guide on the arduino site (and I hooked up 5 in serie i.s.o. the 2 in the example).
Any questions feel free to ask. But like i mentioned, I don't have a scheme for you but I think the previous information will do.
Greetz