Wire nuts work fine in the house but not so well on motorcycles. House wiring doesn't get wet or subject to vibration unless the house has bigger problems than any bike.
Yep. Houses don't usually move or vibrate.
But a few small wire nuts and some electrical tape can make an decent TEMPORARY repair or splice, and they're cheap, light, and re-usable. Carry a bit of wire, too.
A better solution is a few Posi-Lock connectors
and a Posi-Tap
. Posi-Locks and Posi-Taps actually can be used on a permanent basis on motorcycles (but they're re-usable, too).
The only issue is that connectors not in use tend to lose the little screw-in caps on the end after rattling around in a tool pack for a few years. Put them in a tiny bag or bundle a few up with tape or something like that so they're ready when needed.
These things work great; the one downside is that they are a little bulky, so can be awkward in tight situations.
A second point I'd like to make is that even if you don't know which end of a screwdriver is the turny bit, it's still a good idea to carry a few basics. Odds are decent that someone who DOES know what they are doing might stop to help. Or maybe you can call someone to coach you through it, but with no tools or supplies at all, you're just plain stuck with any minor problem.
I've learned the hard way that CO2 cartridges are fairly useless for motorcycle tires -- it takes more cartridge than you'd think to get enough pressure to ride on, and if you have a second leak, or the bead is unseated, you're completely SOL. A small electric pump is the best solution by far. If you're really headed to the wilds, a small bicycle pump can act as backup to the electric pump. Takes a while, but it'll do the job.