I found a 30AWG (0.25mm) wire. Now the solder I bought yesterday is the following: 60% Tin, 40% Lead. The store informed me that all the solders that use Lead are being picked out of the market and being replaced by other ones that wont use Lead for health reasons of who solders. At the store they have one that is 96.5% Tin and 3.5% Silver. It's the nearest that they have at the store, to the one being sold at Radioshack and adviced at this post which is 62% Tin, 36% Lead and 2% Silver. Anyone that is experienced can advise me between the one I bought yesterday with (60% Tin, 40% Lead) and the other one with (96.5% Tin, 3.5% Silver) to use on the Wii? Also, it seems not to have a rosin-core.. they didnt had any solder with it but they had a rosin flux sold apart that you could apply, will it do the same? Is it considered a good solder when the solder makes a ball over the place you are solding? Because this is how the soldering ends up and it also gets a brown "liquid" (suppose its the Tin) around the solder. Is this a good or bad signal? Thanks in advance!