I am wanting to solder some wires to the ATX 'mount/pins' on the back of the mobo (because I have bad problems with a dodgy ATX connector (EnnerMax). if I jiggle the ATX connector I get big fluctuations on the 5v rail, and small ones on 12&3.5v) I will then use a 3AMP 'block connector' to join the PSU to mobo. thing is there are twenty different pins, that's a lot of block connector!

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do you think it'll be safe to join some of the wires together, the earths for instance?. the four 5v rails will add up the volt's if I join them though wont they?, or will it just increase the ampage?. if I could join the 5v and 3.3v and Common earths together respectivly I could use a 10point block connector instead of twenty.
Other thing is which wires on the ATX do you join to turn on/off the PSU without connecting it to the mobo?...
Thanx peeple!

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