diagram help
The first photo is your wiper motor resistor, the second is the one you want to tie into. As for which wire to splice into, you will need to test which one is live in the run position (if I remember correctly). Someone will chime in shortly to get it straight.
If you are doing a MP ignition, it should tell you in the instructions, or you can try summit to see if the have the instructions for download.
valentek
69 B5 408 FB