Yes,
There are tricks, tin the tip of you soldering iron, this means have a small amount of solder coating the tip, but not a big blob. This helps to transfer heat quickly, this way you make a nice quick connection, but don't burn things like the o-ring, or the wire insulation.
Next, take the wire about to be connected and twist the end into a nice neat single braid.
This next step works best if you have a helping hands, but I have gotten by in a pinch by putting something heavy on the wire while it is dangling over the edge of something heat resistant.
If this is the wire exposed end of the wire _____________
This is your soldering iron <=========
And this is your solder \\
... are nothing just used them to keep the text from left justifying.
You want to heat up the wire as quickly, and as brief as possible by placing it against the tinned tip and placing the solder touching the wire close to, but not touching the iron, this causes the solder to melt and wick
through the wire like this:
____________\\_
...........................<============
I like to drag the solder back along the wire to get the whole exposed end nice and coated.
Now on to the actual connection, wipe away any excess solder on a damp sponge by pushing forward at a shallow angle. Then take the wire place it against the center connector, place the tip on them both pressing lightly with the soldering iron, and quickly use the same trick that you used earlier to prep the wire, (solder next to the iron, but not on it).
You now have a rock solid connection.
Good luck,
-Dee