Courtesy light failure, '88 Vert
Thread Starter
Melting Slicks
Joined: Jan 2007
Posts: 2,558
Likes: 3
Courtesy light failure, '88 Vert
Courtesy lights all fail to light when driver's door opens, but all light when passenger's door opens. Driver's side door jamb switch comes all the way out on its own and pulling & twisting it does nothing. From another post found while searching here, access to remove the switch and to check its wiring connections behind the A-pillar is really difficult (can find no illustration in the FSM). Any suggestions on this problem's cause and fix are much appreciated. Thanks in advance. 
Last edited by mgafun; Oct 18, 2010 at 08:10 PM. Reason: typo
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
In the LH door jamb switch are three contacts. On of the three contacts grounds the courtesy light timer module which turns on the courtesy lights. This switch is either not making contact, or it does not have connection to ground. On my 87 this switch contact has a white wire. Try grounding the white wire on the LH switch to see if the courtesy lights come on. This will prove a connection from the switch to the module and then the switch or its ground remains to be checked.
Thread Starter
Melting Slicks
Joined: Jan 2007
Posts: 2,558
Likes: 3
In the LH door jamb switch are three contacts. On of the three contacts grounds the courtesy light timer module which turns on the courtesy lights. This switch is either not making contact, or it does not have connection to ground. On my 87 this switch contact has a white wire. Try grounding the white wire on the LH switch to see if the courtesy lights come on. This will prove a connection from the switch to the module and then the switch or its ground remains to be checked.
Last edited by mgafun; Oct 19, 2010 at 12:45 AM.
Thread Starter
Melting Slicks
Joined: Jan 2007
Posts: 2,558
Likes: 3
