Wiper Relay
Remove relay. There should be continuity between terminals No. 3 and 4, and no continuity between terminals No. 6 and No. 7. See Fig 1 . Apply battery voltage across terminals No. 1 and 2. There should now be no continuity between terminals No. 3 and 4, and continuity between terminals No. 6 and 7. If continuity is not as specified, replace relay.