headlights out... where to look - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Join the Defender Source Community Today

Thread Tools
Old November 12th, 2010, 03:07 PM
Status: Offline
Jiman Khosravan
'94 D90
Join Date: May 2010
Location: Rockville, MD, USA
Posts: 137
Unhappy headlights out... where to look


Another day, another problem it seems... but it's ok.. soon all the bugs will be gone...i hope!

This problem just happened 2 days ago...

The headlight switch has 3 positions... !) OFF, 2) parking and 3) headlight+parking.

1) OFF works
2) Parking works
3) it becomes all OFF again

I opened the casing around the steering column, pulled the cable out from the switch and disconnected it.
I put a voltmeter to the switch and tested the switch and I get voltage across position 2 & 3, so the switch is good.

So I need to somehow go down the wiring. Anyone know where the next "junction" to troubleshoot is?

Or any ideas on where to look?



Reply With Quote
Old November 12th, 2010, 03:14 PM
Gren_T's Avatar
Status: Offline
Gren Thomas
1985 90 300tdi auto
Join Date: Feb 2005
Location: bridgend, wales , UK
Posts: 384
I assume you have tried the fuse for the main & full beam as they are on a separate fuse from the side(parking) lights, or the headlamp relay.

I have seen the switch go short cct and blow the headlamp fuses.

have fun..

Reply With Quote
Old November 12th, 2010, 03:19 PM
ini88's Avatar
Status: Offline
Daniel Marcello
1994 Defender 90 #916
Join Date: Aug 2005
Location: Queens, NY
Posts: 2,785
Pull the switch out and look at the 3 copper connections inside. your 3rd copper hit point might be burned out. Its a common problem. Happen on mine 4 years ago. You can buy a new one or fix the connection.

Edit: oops! just read that you tested voltage across position 2 & 3 and it was good.
Reply With Quote
Old November 12th, 2010, 03:20 PM
evilfij's Avatar
Status: Offline
I have never seen a rover in person
Join Date: Oct 2003
Location: on the internet
Posts: 14,562
Switch is hosed. Under the high load of the lights they go bad.

Only other possibilities are the fuse or having both go out at once (my LWB did this and I was like WTF for a good hour until I figured it out the "Ron good" way ie replace parts until it works again).

*not legal advice*
Reply With Quote
Old November 12th, 2010, 03:35 PM
Status: Offline
Daniel Chapman
1999 D1
Join Date: May 2004
Location: VA
Posts: 762
Does the inside of your switch look like this?
Reply With Quote
Old November 12th, 2010, 03:55 PM
Firemanshort's Avatar
Status: Offline
David Short
1980 Stage One 109
Join Date: Jun 2006
Location: Sterling, VA
Posts: 905
My Series had this problem. It was the hi-low beam switch that went out. I am not sure this applies to the Defender class trucks.
1980 Stage One 109
Sterling, VA
Reply With Quote
Old November 12th, 2010, 06:32 PM
JSBriggs's Avatar
Status: Online
Jeff Briggs
Antarctic Blue Super Sports Wagon
Site Team
Join Date: Nov 2003
Location: Auburn CA
Posts: 12,195
The switches are notoriously bad. Get a relay harness and put it in with the new switch. That is the only real solution to make the switch last.

Reply With Quote
Old November 12th, 2010, 06:34 PM
Craigd's Avatar
Status: Offline
Craig Dickson
1995 D90 Red Soft top
Join Date: Sep 2003
Location: Boulder County, Colorado
Posts: 444
I would buy a new switch after looking at the fuse first of course. Mine did the same thing and the switch looked good but had melted just enough to not make contact when the switch was moved to the 3rd position.

Reply With Quote

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

ht, lights

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Low Beam Headlights Quit JimC Defender Technical Discussions 7 January 29th, 2006 07:54 PM
Headlights - switch problem? mgrgpg Defender Technical Discussions 3 December 14th, 2005 03:42 PM
My headlights are not working woldd90 Defender Technical Discussions 13 December 2nd, 2005 10:49 AM
Yaaaaaaaaaaaarg! Frigging headlights solihul Defender Technical Discussions 2 June 23rd, 2005 09:29 PM
Help - My 90's headlights don't work solihul Defender Technical Discussions 5 May 20th, 2005 12:27 AM

All times are GMT -5. The time now is 06:13 PM.