Which wire to splice for auto choke

Just did this a couple days ago. I put a spade terminal on the end of the red wire Edelbrock supplies and jammed it in the back end of the dark blue wire on the ballast resistor. There is enough room for it to go in and hold well while making contact with that dark blue wire. You could tap the blue wire but I try not to cut the harnes if I don't have to.

upload_2019-6-6_21-10-16.png