The vac lines come out of the tcase , go under the pass side body . Then one up by the manfold . I had one get a hole there . When you put the lines back on the switch . you got a good seat and back on the right line . Also at the actuator , a good seat . The way I teasted the actuator . Push it in cover each hole with you fingers , it won't inflate . Go to the car wash , wash the underside (if there's dirt or put glass on) Start at the tcase and follow each line . Its a pin hole in the line or a bad seat at the end .
Here are two links for you , just to have . I have crawled all over and around , For a pin hole in a dam vac line . At times I have thought about just replaceing all the lines .