Originally Posted by project rs

you need the wiper stalk with the added bit on to vary the time, you need to run a yellow/black wire between spare pin on wiper stalk and into middle of the new relay. if you compare the two together you will see that the variable relay has one extra pin on it and that is the one that you connect to wiper stalk. if you need pics let me know and i'll strip dash and show you(can't do this till thursday though as got no camera till then)