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Courtesy Lights not working!!

F-250 / Super Duty / Diesel

Courtesy Lights not working!!

 
  #1  
Old 01-12-2019, 03:10 PM
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Thread Starter
Join Date: Sep 1998
Location: Centralia, Wa 98531
Posts: 64
Courtesy Lights not working!!

I have a crew cab 2006 F-250. Both the front and rear overhead ceiling Courtesy Lights fail to come on when the doors are opened.. The map lights work fine when their switches are turned on. I have replaced both courtesy light center light bulbs with no luck.. I must assume that the door switches (although I cannot find them) are working as I get a door ajar warning when that condition exists.. Any ideas and where are the door switches located? Help please..
 
  #2  
Old 01-12-2019, 04:33 PM
Senior Member
Join Date: Oct 2002
Location: St. Louis (Out in the woods)
Posts: 6,590
Do the courtesy lights come on when switched from the main light switch? Cargo bed light should also come on at the same time.

Ignore the map lights, they are on a completely different circuit.
 

Last edited by projectSHO89; 01-12-2019 at 04:35 PM.
  #3  
Old 01-12-2019, 05:00 PM
Member
Thread Starter
Join Date: Sep 1998
Location: Centralia, Wa 98531
Posts: 64
no lights when dash dimmer switch clicked on

Nothing happens when I rotate dimmer switch to clicked on position.no courtesy lights..no cargo light
 
  #4  
Old 01-12-2019, 05:59 PM
Senior Member
Join Date: Oct 2002
Location: St. Louis (Out in the woods)
Posts: 6,590
There's nothing wrong with the door switches.

Check fuse F35 (ALWAYS HOT) under the dash to ensure it is passing power. It supplies the power that the "Interior Lamp Relay" in the instrument cluster supplies to the courtesy light circuit when commanded.
 
  #5  
Old 01-12-2019, 08:06 PM
Member
Thread Starter
Join Date: Sep 1998
Location: Centralia, Wa 98531
Posts: 64
Fuse F35 was blown... never thought that map lights / courtesy light would have separate fuses.. replaced fuse, blew again... I then totally removed the rear courtesy light fixture and unplugged it.. replaced fuse and all is good with front fixture... underside of rear fixture at the courtesy light bulb holder is corroded and looks like someone did something to it in the past...will check for shorts and repair or replace it next week.. thanks again for your help...
 

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