Windshield Washer System
The washer pump has two inputs, when it is driven in one direction it feeds water to the front screen and when reversed it feeds water to the rear screen.
At rest, both sides are connected to ground, but when running, the current will flow in either direction. The circuit is protected by a 10A fuse, which requires 15A for 1 second to blow. The normal running current is 4A with a stall current of 7A.
Workshop Hint
If the wiper motor stalls and then becomes free, the relay will not be re-energized until the key is cycled off and then back on.