Weird brake light issue on my 97 Please HELP! - Defender Source
Defender Source  

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


Reply
 
Thread Tools
  #1  
Old July 11th, 2009, 07:04 PM
Cyborg
Status: Offline
Larry Walton
'97 D-90 ST #2066 UK 4X4
Member
 
Join Date: Apr 2004
Location: Portland OR. USA
Posts: 107
Weird brake light issue on my 97 Please HELP!

So I had people tell me that my two of my brake lights were not working. I tested and discovered that my third (high mounted) brake light was the only one working. No big deal I assumed it was bulbs or sockets.

I found a bad socket on the drivers side. I replaced it and got my tail light working on that side but the brake lights still were not working.

I dug deeper and discovered the following.

The tail light filaments in these bulbs light with the headlights just fine. So I know the ground to each socket is good.

The center brake light turns on so I know the brake light switch connected with the brake pedal is working and power is getting to that one brake light..

With my shovel holding down my brake pedal I am not getting any voltage at either of the connectors which connect to the back of my sockets on the driver or passenger sides when voltage is read in reference to the known good ground on each connector.(Remember the tail lights use these gnds so we know they are good)

At this point I am believing that the problem is in the wiring for the power. Based on the diagrams I have here it seems that it MUST be a bad connection at the A3/A4 harness splices (Upper left side of page 29/43.1 Exterior lamps, Brake and Reverse lamps)

So my questions for you guys are....

Can i trust these diagrams?
Could the problem be something else?
If it is likely a bad connection at the A3/A4 splices does anyone know physically where they would be located? Under my vehicle the wires from each side seem to converge near the gas tank under above the protective armor. The splice seems likely to be located there but I would hate to rip all of that out just to find out it is someplace more conveniently located.

Any advice would be appreciated.
Attached Files
File Type: pdf D90 Electrical diagrams.pdf (1,000.2 KB, 214 views)
__________________
Visit the Land Rover Beer Bar,"The Best Beer Bar X Far!"
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old July 11th, 2009, 09:08 PM
Cyborg
Status: Offline
Larry Walton
'97 D-90 ST #2066 UK 4X4
Member
 
Join Date: Apr 2004
Location: Portland OR. USA
Posts: 107
Does anyone know how the wiring from the brake switch to the brake lights is routed? The signal is getting to my third brake light only so I suspect the problem is where the wire is spliced to diverge from one wire to three going to the separate brake lights. Does anyone know where that point is located? I am on the verge of dropping my gas tank because I SUSPECT it may be under there. Geez I dont want to do that especially if it is unnecessary.

Any advice would be appreciated.
__________________
Visit the Land Rover Beer Bar,"The Best Beer Bar X Far!"
Reply With Quote
  #3  
Old July 11th, 2009, 10:55 PM
specops1526's Avatar
specops1526
Status: Offline
Brian
Beluga '97 90
Member
 
Join Date: Sep 2008
Location: Los Angeles
Posts: 1,565
Don't know much about the wiring but I know that the connectors on the round tailights had issues of corrosion which LR tried to remedy with a rubber boot kit, especially for trucks in wet environments. Have you checked those?
__________________
Quote:
Originally Posted by rijosho
-I need to figure out a cooler-looking way of getting into the driver's seat

-->
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Beluga 97 D-90
Chawton 04 DII SE
Tangiers 04 DII G4
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old July 11th, 2009, 11:05 PM
SPIKE's Avatar
SPIKE
Status: Offline
Eric
94 D90 #1
Member
 
Join Date: Jun 2007
Location: Larkspur, CA, USA
Posts: 36
Red face Don't drop the tank.

It's been awhile since I've had a 97 but I bet that they are behind the passenger rear speaker as on earlier models.
Reply With Quote
  #5  
Old July 11th, 2009, 11:24 PM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
Quote:
Originally Posted by SPIKE
It's been awhile since I've had a 97 but I bet that they are behind the passenger rear speaker as on earlier models.
This is right.
__________________
*not legal advice*
Reply With Quote
  #6  
Old July 12th, 2009, 12:05 AM
Cyborg
Status: Offline
Larry Walton
'97 D-90 ST #2066 UK 4X4
Member
 
Join Date: Apr 2004
Location: Portland OR. USA
Posts: 107
specops, I have been all over these connectors. I have the rubber boots installed and I cannot see how the connectors could be at fault. They look fine. I will double check the brake light leads to be sure.

PIKE and evilfij,

Yes there are some odd wires behind the speaker box on the back deck on the passenger side. Mostly loose wires not connected into anything other than the wires for the 3rd brake light. I will see about possibilities there. Maybe something got unplugged? What I saw didn't look like that was a possibility. I am tired and will look in the AM.

THX for the input.
__________________
Visit the Land Rover Beer Bar,"The Best Beer Bar X Far!"
Reply With Quote
  #7  
Old July 12th, 2009, 07:47 AM
Hoosier's Avatar
Hoosier
Status: Offline
Chris Hinkle
More than I need
Member
 
Join Date: Jun 2006
Location: Dallas, TX
Posts: 634
Just get a voltmeter, start at the rear right side tail lights(the left side wires come across and join on the right side rear) and work yourself forward. You need to test every connection. Check ground wires also. Third brake light comes off in the rear, so the problem is in that area.
Reply With Quote
  #8  
Old July 12th, 2009, 12:07 PM
Cyborg
Status: Offline
Larry Walton
'97 D-90 ST #2066 UK 4X4
Member
 
Join Date: Apr 2004
Location: Portland OR. USA
Posts: 107
Hoosier,

Thanks for the input. I have been using my meter it is just that I have been reluctant to start stripping away the harness wrap until I have a better idea where the splices may be. It sounds like you may be suggesting that the split takes place on the right rear. I hope so as I am concerned since the harness goes into the covered area of the gas tank.

I will strip the harness open in the right rear area and figure it out.
__________________
Visit the Land Rover Beer Bar,"The Best Beer Bar X Far!"
Reply With Quote
  #9  
Old July 12th, 2009, 01:04 PM
Roadsiderob's Avatar
Roadsiderob
Status: Offline
Robert Dassler
1994 D90
D-90 Source Vendor
 
Join Date: Apr 2004
Location: Albuquerque, NM, USA
Posts: 994
The junction you seek should be behind the RR speaker. Green/Purple is brake lights, I think. The main harnass goes up behind the speaker. The wires terminate in big junctions. There is a subharnass that goes across the rear crossmember that feeds the left side and another that feeds the right side. The trailer wiring subharnass and third brake lights are fed from this junction. You obviously have power to that point if the third brake lights work.
__________________
Rob Dassler
SWR Automotive
505-872-7818 (shop)
Reply With Quote
Reply

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

Tags
97, brake, ht

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
brake light switch snuffer Defender Technical Discussions 7 March 28th, 2006 07:02 AM
Tailgate, Tire Carrier, 3rd Brake light, rear bumper jabber For Sale - Parts 5 December 8th, 2005 02:10 AM
Help, brake light problem! Dfndr90 Defender Technical Discussions 5 July 11th, 2005 07:39 PM
tire carrier, 3rd brake light, and other stuff jabber For Sale - Parts 12 January 20th, 2005 03:06 PM
Brake light on after brake install wicks Defender Technical Discussions 6 October 13th, 2003 07:01 PM


All times are GMT -5. The time now is 04:24 AM.


Copyright