There's 4 places the splices will need to be made, so any ideas where I can get these in bulk instead of in an assortment?
Tons of places for buying parts like this.
As Roger mentioned above - Mouser is one. Newark and Digikey are also good sources.
I just went to Mouser and entered "
uninsulated butt splice"... and clicked on the part below for 16 to 22 ga wire. This is a crimp style connector, I assume you have a good crimper in this size?
Better hurry, there are only 79,257 in stock !!
Hope this helps.