As per Drjoe....I usually "tin" the iron a bit and then touch the connection to be soldered....once the solder begins to bleed into the connection I apply more solder to the wires....the process is best done quickly as too much heat can damage stuff and tons of solder has no advantage.
Use of the solder sucker device is also the key to cleaning things up on an old connection. I like to start with everything clean. A connection will be much stronger if you remove all previous solder from the terminal.
Use of the solder sucker device is also the key to cleaning things up on an old connection. I like to start with everything clean. A connection will be much stronger if you remove all previous solder from the terminal.