Toyota changed the color codes for the wires several times over the years. It is clear that the middle wire is the ground. It may not matter if the other wires are correctly matched. One is a parking light filament and the other is the turn signal filament. I'll try touching them while an assistant flips the turn signal lever on, and then the parking light.
I found some barrel connectors that crimp, to connect the wires at the local hardware store.
A video on youtube helped with tips about installation.