Don't worry about it.
Clean it, check the terminals, and if you feel ambitious, remove each terminal and clean them properly. Reinstall.
Several threads here with photos and descriptions.
And if you drive alot at night, make a relay set up or buy one from screen name crackedback.
The fusebox is under the dash, near the left side vent door.
Headlights have a 15 amp circuit breaker in the switch.
