Jump to content

Dome Light Mystery - Solved 8/17


Recommended Posts

Ok, I've been working on this all week and it's driving me crazy. I was missing the door jamb switch on the driver's side to get the dome light working when opening the door. It's on order. It works sporadically when just turning it on manually by shorting the red->black wire to the door's ground screw. I do have a new dome light coming to rule that problem out. Still can't get it to work, although when I did have a working switch for the driver's side it did work momentarily and so did the passenger side, but not any more. I did my best to locate any shorts without ripping out headliners and carpet and going through every inch of wire. Any ideas? I know it's a stupid problem to chase down, but it's one of the last mysteries left on this truck other than the tach not working.

  • Like 1
Link to comment
  • Replies 7
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

It's not a short, that would blow the fuse. The lamp has power to it at all times like the brake lights, horn, clock... and the door switch simply grounds it to turn it on. Try repeatedly working the switch, on off on off on off, (possibly several dozen times) they get rusty and don't make good ground contact.

  • Like 1
Link to comment

Scooby doo! Found the problem! Faulty room lamp timer. It would work when tapped, so I took it apart and cleaned it with 99% alcohol, but unfortunately that wasn't the issue. I ended up just bypassing that little bitch. I just have to remember to be mindful of leaving the door open.

  • Like 1
Link to comment

For those that may have this issue in the future...the room lamp timer is the little box under the passenger seat. I hooked the ground (black) in the harness to the seat rail ground, and hooked the brown wire in the harness (which goes to the light itself) both to the Red/Black and the Black/Red, which connected the door switches to the lamp.

  • Like 2
Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.