I solder my own connections too using resin core solder and a Weller 140/100 watt soldering gun. You have to be quick using it, or it will separate the copper strip from the plastic, but the cheapy soldering irons don't get hot enough. I got the Weller at Home Depot for $30 I think. My father had one for a good 20-25 years, same model, and it just recently croaked. Good investment