From our friend at Paraclete Press, Pamela Jordan:
Come, Holy Spirit, and send forth by heavenly direction a ray of Your light.
O best consoler; sweet guest of the soul; sweet refreshment.
In labor, rest;
in heat, coolness;
in tears, solace.
O blessed light, fill the deepest places of the hearts of the faithful.
Wash what is dirty;
water what is arid;
heal what is wounded.
Bend what is rigid;
warm what is cold;
make straight what is devious.
Give to your faithful, who trust in you, the sevenfold gift.
Give the reward of virtue;
give the final end of salvation;
give eternal joy.
I don’t know the source.