If you need instructions, you probably shouldn't be doing it youself.
As a blanket comment, i find the repetitive posting of this type of comment completely useless.
How is someone supposed to learn anything if they ask about it, and someone says "don't even try it".
I understand wiring schematics can cause injury/death easily, and that it should be approached with extreme caution, but how do you know the person can't follow what is a really simple schematic.
Wiring a stc is not difficult at all. If the person has troubles following the schematic then that's a different thing of course, but atleast give them the benefit of the doubt whilst advising of all appropriate cautions.
REAL WORLD EXAMPLE:
I don't necessarily understand a lot about electrical systems and components, but i can easily knock up a safe stc controller, and recently have been asking a heap of questions about PID wiring schematics as i had no idea.
I got some really helpful responses and am now supremely confident in my abilities to wire it all up, complete with switches, led's, emergency stops and all the "bling".
Not having an isolated dig at you Glen, but at the comment in general as it appears a lot by several poster's.
Of course the advise usually given out to get it checked by a sparky is sound advise, or not attempt if you can't follow this simple diagram of the stc, but atleast give them the info so they can decide if they are able to attempt it - any hesitation and they shouldn't...
OT a bit more.... i haven't checked for ages if this type of question is airlocked/sticky'd, but if it isn't, it should be.
A central place with one correct wiring diagram to send people who ask about it would be awesome (safer) than having people trawl through how many hundreds of pages there would be on the internet which often have incorrect schematics.