Internal SATA drive power

How do you get an extra power connection for an internal extra SATA drive
John Shepardson wrote on :

How do you get an extra power connection for an internal extra SATA drive (other than the 2 I have in my G5). I see no molex type 'legacy' power connector in my G5 that most SATAs can connect to.

I guess you can use a SATA power splitter? How about a SATA power cable extension? Any links appreciated.

John