Headlight Control Relay
Headlight Relay Testing:
CONTINUITY
1. Check that there is continuity between terminals 1 and 2.
2. Check that there is no continuity between terminals 3 and 4, and between terminals 1 and 4.
3. If not as specified, replace relay.
OPERATION
1. Apply battery voltage across terminals 1 and 2.
2. Check that there is continuity between terminals 3 and 4, and no continuity between terminals 1 and 4.
3. If not as specified, replace relay.