Thanks to a post in the archives, I found a page of detailed instructions on how to build a UA5 battery system and just completed it. Trouble is, there's a mistake in the instructions.
Here's the link:http://www.taperssection.com/reference/html/DIY_EdirolUA5Power/
The title of the Brian Skaliner message in the archives that led me to that page is DIY SLA/RC BATTERY PACK
The error is in this paragraph:
Put the batteries aside, you won't need them until the last step. Open up both of the Connector Repair Kits. You'll need only the female
ends, you can put away the male
connectors. At the end of each wire, there is a crimp connector. Cut it off. Then, strip the insulation off so you have about a quarter inch of the bare wire showing. Take the black wires and twist them together. Do the same with each of the red wires.
The errors are in "female" and "male" -- which are switched. In reality, you need to use the male connectors, and you can throw away the females. I followed the instructions, and when I finished, I found myself trying to hook a female connector on the cable to the female connector on the battery. So I started over, using the male connectors, and of course the result is the required cable.
The photos on the instructions page clearly show male connectors -- but I didn't notice that until after I'd finished the first cable.
It would be great if this could be corrected, so I can be the last person who has to build two cables to get one that works.