[glassdoctor]

I soldered leads for my ubecs right at the circuit board. I put them on the underside of the board with a connector so the ubec can be easily removed.

One tip to make this easier.... scrape or scuff the spot you solder to and check to see if the solder gets good contact, not a cold joint like Serum said, before you solder the wire s to it. Castle uses a clear coating on the MM and it can give you trouble trying to solder, so that's why I say to scrape it first... wire brush, exacto, etc...