Chevrolet Repair: Malibu Taillights, chevy malibu, dashboard lights

Question
I'm having problems with my '99 Chevy Malibu.  The taillights/parking lights and dashboard lights are not working either in the auto or manual mode. Headlights are working fine. The service engine soon light came on and I believe this is related to the my problem.  Checked all related bulbs and fuses.  Any ideas on the problem? Could it be the headlamp switch?  Thanks  

Answer
Hello Kevin,
It could be the switch, but it could also be a connector, or a fusible link.
The headlights are on a separate fusible link I believe.
If the front parking lights also don't work, it probably is not a connector near the rear of the vehicle, but could be where the wires pass through the firewall.
But I would suspect fuse first.
Van