a soldering tip -> have a good mechanical connection before making the electrical connection [solder]
1 - strip each wire about the same amount - don't nick any strands
2 - twist the ends together well
3 - when the iron is hot , "tin" the iron with a small amount of 60/40 resin core solder - do NOT use acid core [radiator] solder
4 - put the wires on the iron , and apply the solder to the wire - stop as soon as solder flows over the full length of bare wire
5 - when the joint cools , bend the joint flat against one wire
last, slip the heat shrink tubing over the joint and shrink it [you did remember to slide a piece on before joining the wires?]

soldering is always preferable to crimp connectors, which might make a good mechanical connection, but frequently don't make a good electrical connection, at least not one that lasts

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics