While is Florida recently, I pulled into a garage for a quick fixup of a few items. One was a pesky wire connection for a turn signal. Auto Tech in Bunnell near Flagler Beach is highly recommended.
He quickly found the bad ground connected thru a crimp style connector that I had put in place. He stripped the wires and soldered and shrink tubed the connection for a better joint with a butane fired soldering gun. I've never used one and relied for a long time with crimp connectors and an aircraft grade ratcheting type crimp pliers.
I experimented tonight with my new Bernzomatic and made two nice tight joints, one side by side and one intertwined to the other part. The exhaust of the heater is used to shrink the shrink tube over the joint. I'll slowly go thru the whole car and replace suspicious joints this way. Many wires are joined to keep my electronic ignition running. Any one of those wires could cause the engine to quit...most in hard to see or diagnose locations.
I got mine today at Princess Auto ( Canadian Only ) for about $40. including butane but I'm sure it would also be available in Advance Auto Parts, Ace Hardware and places like Home Depot or Lowes. Pretty basic stuff all round, but I like the portability of it.
The first pic is of a Heron that lived in our back yard while building the house...I miss the bugger but know he's in a better place now. He's about 100 feet behind us now in the forest. The landowner behind us dug out a 200' by 100' pond and stocks it with gold fish.