Search for a fuse diagram online. If one is not available, then a service manual can be purchased to find the layout.
well i could be alot more helpful if i knew what year it is. if you're not sure i can tell you how to determine the year as well.
Go to thesamba.com under technical.
does your owners manual show anything under fuses? Or you may have to go to a vw dealer
If the engine is in good shape, it will go in the mid 70s
Does a bad thow out bearing sound like a bearing
go to the samba.com and then go to the technical section. All the diagrams you could ever need http://www.thesamba.com/vw/archives/info/ the link
http://ww2.justanswer.com/uploads/deleontow/2009-08-07_041633_98_Beetle_Fuse_arraignment.pdf
The clutch is bad or out of adjustment.
That's just the nature of thermostats. I've had them go out two months after I installed them.
Read your user manual
As fast as its engine will let it. Or about 65mph. Different engines and tires will change this.
They run cables and brake lines on the tunnle not wiring so in short NO