wires connect to wiper motor assembly 10 as well as to the vehicle to form wiring harness 50 the wires include slow winding wire 24 fast winding wire 26 power b ground 28 and cam output wire 22 optionally a window wash wire 32 connects a window wash motor 30 to control unit assembly 100 thus there are preferably only six wires in harness 50 and the distance between wiper motor assembly 10 and switch assembly 100 is typically short in a small car this keeps the wiring harness simple and inexpensive wiring harness 50 connects to control unit assembly 100 which is an integrated switch controller combination the control unit assembly 100 includes an electrical switch 102 comprising a set of electrical contacts arranged in a conventional slide switch style of contact arrangement operatively connected to a control arm 104 switch 102 may assume each of 4 positions off rs int slow and fast rs int means u201c rain sensor or intermittent mode u201d control unit assembly 100 includes a printed circuit board 106 electronic control circuitry 108 is disposed upon circuit board 106 the contacts of switch 102 are integrated into circuit board 106 using rivets in a conventional manner the single.