brake lights - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-25-2006, 08:12 PM
ricks032003's Avatar
New Member
 
Join Date: Jul 2004
Location: Germantown, Tn.
Posts: 23
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
brake lights

hi; i have a 95 grand am and the problem is i have no brake lights. i have the third brake light but no others. the blinkers and parking lights work good. i replaced all bulbs for the sake of it, pulled brake switch out and ohm it out which seemed to be working fine. any other suggestions or thoughts? thanks everyone.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-25-2006, 10:15 PM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 61
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
Doc here,

Assuming you have already checked the fuse marked "Brake Lights" and it's good, I have a few items you could try...

Go back to the brake lamp switch, Get out your DVOM, Set it for DCV , V X 50 or autorange scale, and measure both sides of the switch to ground. One side only will have power..

Next if good, move your probe to the other side..Depress the brake pedal (tell it how high gas prices are ..sorry..couldn't resist.. ), With it fully down it should read 12 volts.

Jumper across the brake light switch.

Isolate the brake light wires going in/out of the steering column and turnsignal switch..at the steering column harness plug..inspect the pins and clean any if needed, look for burned or loose wires..You should have 12 volts on those .. If so, you have power to the rear harness.

Remove the jumper.

Go to the tail lamps, Inspect the sockets themself..Be sure the right bulbs are in there, and the sockets are not corroded.

If so spray with a good Electrical cleaner and burnish the contacts and bayonet areas with an acid or similar brush. you can push the socket through the front (usually on most) to gain access.

Install your brakelight switch jumper or have someone sit and hold the pedal down.

Check the sockets to see if you have 12 volts at the sockets. If you do not, you have an open harness between the column and the rear you'll need to back track the harness to find the cut wires.

If you do have power, measure the ground at the lamp sockets.

Set your meter for Ohms scale, R X 1, calibrated to 000, and measure the resistance from the socket body or bayonet to a good body ground. It should read 000. If it is open, try a jumper to ground and test the brake lamps if it works, repair the ground. Lost ground is usually the problem.

If you have a trailer plug..look there also, those can short out the rest of the system.

Doc
__________________
Aftermarket Solutions
Electronic & Electrical
Innovations
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
58 Chevy Apache : Brake Lights / Wiring Harness Rathimis Electrical 3 12-13-2005 08:34 AM
brake lights stay on.... jmtw Electrical 6 03-06-2005 07:48 AM
Hotrodders Knowledge Cluster: Disc Brake Conversions Jon Suspension - Brakes - Steering 0 08-29-2003 03:34 PM
Brake lights, need help! fireschenie Electrical 18 01-08-2003 12:10 PM
Brake Lights 53chev Electrical 4 12-10-2002 03:49 PM


All times are GMT -6. The time now is 08:03 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.