I've watched about every video under the sun, and know how to solder correctly, but am a tad confused as whether or not you can heat up old solder to connect another wire...
More specifically:
https://www.acidmods.com/forum/index.php?topic=22685.0This tut shows where to solder the positive and negative ends, but I was wondering if I should just try and reheat the connection, or pile on more solder for the wires.
Also, he states (later in the topic) that he's hooked up 10 LEDs to one speaker, and while I don't plan on doing that, I was wondering if I just had to keep soldering wires into the positive and negative ends, or if I had to take extra steps/precautions to make sure they don't touch. (I don't think it would matter since it's all coming from the same place, doing the same thing)
LASTLY, is it dangerous, stupid, etc, to just solder wires leading to nothing? I was thinking that while I had everything open, I could solder a few extra wires in there for future LEDs
Thanks for any input...I'm eager to get this done, but don't want to screw everything up