tail lights and dash lights on 1998 Oldsmobile Achieva

after replacing fuses tail lights and dash lights go after every 7-10days. my husband has tested the wiring replaced bulbs and fuses and problem still is there any suggestions?

Asked by for the 1998 Oldsmobile Achieva
Check the headlight switch and wiring connector? Just a hunch. Check for any melted or burned terminals in the connector.