illumination problem - Diesel Truck Forum -
Thread Details Posted by sstockton, this thread has received 3 replies and been viewed 512 times.

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 05-10-2006, 02:37 AM Thread Starter
Senior Member
sstockton's Avatar
Join Date: Jan 2009
Posts: 3,514
Points: 69,301
Thanks: 3
Thanked 64 Times in 60 Posts
illumination problem

I have a 94 F250, that was originally a canadian truck, and I'm having trouble with my lighting system.

pretty much the deal is, I can't get my headlights and illumination lights on at the same time. No illumination lights also means no tail lights, which is just an added extra pain in the neck. There is a precarious position if you jiggle the switch just right both will work.

with that said, I figured it was the switch. I replaced the switch, and it was to no avail. So I replaced the pig tail that plugs into the back of the switch, and still nothing.

I removed the cluster and checked everything and it all seems fine. So I'm all out of ideas, any help or suggestions would be greatly appreciated. Has anyone had this problem before.

2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.

sstockton is offline  
Sponsored Links
post #2 of 4 (permalink) Old 05-10-2006, 03:12 AM
Senior Member
Diesel Dog's Avatar
Join Date: Dec 2008
Location: N.E. Mississippi
Posts: 4,024
Points: 45,607
Thanks: 84
Thanked 24 Times in 22 Posts
If I'm not mistaken and I may be..... I think the switch opperates a relay or two and that would be where the problem lies.

'00 cc f 350 a few mods, and a bts tranny.

Wet concrete, Hot Asphalt And Life Wait for no one
Diesel Dog is offline  
post #3 of 4 (permalink) Old 05-10-2006, 06:18 AM
Senior Member
Join Date: May 2005
Posts: 1,921
Points: 14,581
Thanks: 0
Thanked 2 Times in 2 Posts
Send a message via Yahoo to gtspowerstroke
Make sure you have a good connection everyhwere and that the grounds are good. Bad grounds will do really wired things.
gtspowerstroke is offline  
post #4 of 4 (permalink) Old 05-10-2006, 01:01 PM
Senior Member
Join Date: Jun 2005
Posts: 833
Points: 1,426
Thanks: 3
Thanked 21 Times in 21 Posts
no relay on the OBS trucks all of the power runs through the headlight switch.

I had a very similar problem on my old ranger and after hours with wiring diagrams and testing and probing with multimeters I found that I had an intermittent connection where the wire passed through the firewall providing power to the switch. I ended up running another wire to the switch and splicing it in because of the design of the passthrough on the firewall.

95 F350 Centurion Conversion Bronco (Crew Cab SRW) 4X4 4.10, Isspro Performax Boost, Pyro, & trans temp on the A-pillar, BDP Stage 1 injectors, Open air intake, Dpp Downpipe, Self built E4OD with parts from Racer-X, Tony Wildman Chip, Early '99 Intercooler.

Destin FL Vacation Houses 1 block from the beach
BJS is offline  

Quick Reply

Register Now

In order to be able to post messages on the Diesel Truck Forum - forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome