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CheeseBall what gauge of wire is on a standard molex? The ground for 12V is what it actually was.
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Depends on the PSU to some extent, there aren't as many standards as there are in the AC world where things are ruled by the National Electrical Code (among others) However typical is either 16 or 18 guage, with a few cheapies going for 20 (also they tend to use 20 on the little FDD style connectors)
Either way, it shouldn't be a problem. As I mentioned in the previous post, that is the coil side of the relay, with a probable current draw in the 10's of milliamps range. The molex wiring should be plenty for that sort of load no matter how cheap the PSU might be.
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Also, everytime I flip my switch between always on and relayed, but sub puts out a bit of a kick. The sub is 4' away and the speaker wires aren't that close. Why is there this discharge when I switch? oh and also when My comp turns off.
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By 'sub' I assume you're refering to a subwoofer in your speaker setup?
I am guessing, but it seems likely to me that you are putting a bit of a spike on the line which is getting back into the audio amp on your sound board.
The most likely cause that I can think of is possibly a back EMF pulse coming from the relay coil when it changes state. Try momentarily unplugging the pump and flipping the switch to see if the noise still occurs. If it does, the relay is the cause. Try putting a small signal diode across the coil terminals of the relay to get rid of the pulse (actually not a bad idea regardless...)
Gooserider