They make such a thing? Awesome!
Unfortunately, I don't know what keywords to use when searching Digikey/Mouser. So far, typing in "spade lug" pulls up single, crimp-type male spade connectors, no splitters or adapters. Any suggestions on keywords?
I suppose in the end, I could solder a 1/2" length of thick bus wire into the slot in the terminal and then solder the other wires to the bus wire.
Alternately, I could cut some of the heat shrink off the leg of the 22.1K resistor and solder the wires to that, but it seems flimsy and easy to break. Would make changing that resistor out later on tough, too.