I've used a similar technique I learned in the oilfield to join or repair solid conductor and stranded wire breaks.
Just strip an identical length of insulation from the wires to be joined then form a U in each by bending them halfway thru the stripped section. Join the bent ends and give them a twist for a mechanical connection as you would in forming a Western Union twisted splice. You should put a heat shrink sleeve on one wire if you have one with you.
Take your ordinary solid core solder strip about 3X longer than your splice and use a hammer, the side of some pliers, a rock, etc to pound it flat so that it is then enough to bend easily.
Wrap the splice with this thin strip of solder across the whole splice and trim so that it doesn't overlap the insulated ends. Take a strike-anywhere match, a camper's match, a small butane torch, cigarette lighter, etc and hold it close to the solder until it melts into the splice. Then pull the heat shrink tubing over the splice if you have it and shrink it with your heat source. If you have no heat shrink tubing coat it with some 3M waterproof sealant, some rubber tape insulation, or plain electrical tape if that is all you have.
This works great and requires ordinary tools like a pocketknife, matches, and some sort of sealant.
Just strip an identical length of insulation from the wires to be joined then form a U in each by bending them halfway thru the stripped section. Join the bent ends and give them a twist for a mechanical connection as you would in forming a Western Union twisted splice. You should put a heat shrink sleeve on one wire if you have one with you.
Take your ordinary solid core solder strip about 3X longer than your splice and use a hammer, the side of some pliers, a rock, etc to pound it flat so that it is then enough to bend easily.
Wrap the splice with this thin strip of solder across the whole splice and trim so that it doesn't overlap the insulated ends. Take a strike-anywhere match, a camper's match, a small butane torch, cigarette lighter, etc and hold it close to the solder until it melts into the splice. Then pull the heat shrink tubing over the splice if you have it and shrink it with your heat source. If you have no heat shrink tubing coat it with some 3M waterproof sealant, some rubber tape insulation, or plain electrical tape if that is all you have.
This works great and requires ordinary tools like a pocketknife, matches, and some sort of sealant.