okay HWS asked me to post up my way of the same procedure. Using my method will allow you to not have to open the case. Pretty much what you do is you snip off all the connectors except for the 20/24 pin (the biggest one). Then you isolate all the yellow wires and all the black wires. Strip the ends of all the wires, twist them together, and put a dab of solder on the end. Then solder on your banana clips or if you want to go alligator clamps then just do nothing. Instead of the resistor and jumper wire you can instead use a powersupply tester. Step 1: buy a PS tester. Step 2: plug it into the 20/24 pin connector. Step 3: attach it to your PS and make sure it has good airflow since it is a resistor and it will get hot! That's it. A PS tester will run you about $5-8, if you pay more you're probably buying one with a voltage tester on it or some other completely useless crap. Just get the cheaper version, it works well. So there you go, the PS costs you $20 and another $5 for the tester and you have a fully functional R/C powersupply for $25. Sure beats paying $100 at the hobby store!

BTW: I know this is my first post in a long time, I kind of left RCU and I'm not really going to come back at least soon. I only posted this because HWS asked me to.