Quoted from Miguel351:
You should just get yourself a heat gun and a ton of solder sleeves. It would go WAY faster and be about 10 times easier.
Solder sleeves have a ring of solder in the middle of a clear heat shrink tube. Basically, you just intertwine the wires, slide the sleeve over them, heat 'em up, and move on to the next one!
amazon.com link »
Might not be the cheapest, but you can get an idea of what they're like.
I wish i had known about these when i was repairing a cut lost world harness. they are pricey but the time savings would be worth it to me. thanks for the tip.