cruise control problem - 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 08-15-2004, 09:39 PM
stfinney's Avatar
Member
 
Last photo:
Join Date: Oct 2002
Location: Vero Beach, FL
Age: 41
Posts: 387
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
cruise control problem

Whenever my cruise control is on and I have to turn my lights on, for rain or night-time, my cruise turns off. This is because when my lights turn on, the 3rd brake light comes on and stays on. Could it be a sensor or something causing that? Any help would be appreciated!! TIA!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-16-2004, 08:19 AM
cboy's Avatar
Member
 

Last journal entry: Finished
Last photo:
Join Date: Jan 2004
Location: Atwater, CA
Age: 69
Posts: 3,918
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Is this a "stock" wiring set up or did someone wire in the third brake light after the fact? It sounds to me like the 3rd light got wired to the running lights circuit (on when headlights are on) rather than the to the circuit which comes from the brake switch (on only when brakes are applied). I don't think the 3rd light should come on at all when you turn your headlights on.
__________________
Always learning...and sharing what I've learned. The Scratch-Built Hot Rod.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-16-2004, 08:49 AM
troy-curt's Avatar
Shop Owner And Troll Hunter
 

Last journal entry: Detailing Eng. Compartment
Last photo:
Join Date: Apr 2003
Location: Prairie Grove Ar.
Age: 76
Posts: 2,646
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Check the bulb, could be shorted or wrong. Or like posted, wired wrong.

Troy

__________________
If you don't make mistakes. your not doing anything.

69 ss rs full custom camaro 98 ISCA grandchampion
69 ss rs bb camaro wifes driver
66 Elcamino 350/all dz parts,ac,windows,loaded,my driver
69 ss chevelle bb conv.fresh frame off
26 T sedan street rod
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-16-2004, 05:03 PM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 62
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
Third Brake light

[color=yellow]Doc Here

Is the 3 Rd brake light a duel filament bulb type?

Unless it is, your problem is going to be there if you have tail and brake lights at that lamp.

The Brake and tail lights can not be on the same circuit or all will come on and stay on when the lights are turned on, making the Cruise control think your riding the brake.

Doc
[/color]
__________________
Aftermarket Solutions
Electronic & Electrical
Innovations
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-16-2004, 09:27 PM
stfinney's Avatar
Member
 
Last photo:
Join Date: Oct 2002
Location: Vero Beach, FL
Age: 41
Posts: 387
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It's on a 1994 car, so it is stock. It didn't used to do that. It worked fine. I'll check the bulb and see. I didn't think of that. Could the brake switch be bad? It should be a single filament bulb, as it should only come one when the brake is applied.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-16-2004, 09:33 PM
troy-curt's Avatar
Shop Owner And Troll Hunter
 

Last journal entry: Detailing Eng. Compartment
Last photo:
Join Date: Apr 2003
Location: Prairie Grove Ar.
Age: 76
Posts: 2,646
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
If the switch was bad, all the brake lights would be on.
It should be single filament bulb.
Try unhooking it or removing the bulb, and then go from there.

Troy

__________________
If you don't make mistakes. your not doing anything.

69 ss rs full custom camaro 98 ISCA grandchampion
69 ss rs bb camaro wifes driver
66 Elcamino 350/all dz parts,ac,windows,loaded,my driver
69 ss chevelle bb conv.fresh frame off
26 T sedan street rod
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-20-2004, 09:31 PM
stfinney's Avatar
Member
 
Last photo:
Join Date: Oct 2002
Location: Vero Beach, FL
Age: 41
Posts: 387
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Ok, I took out the bulbs, yes bulbs, 2 of them. They are the little push in bulbs. Anyway, I took them out and it still does the same thing, so I'm assuming that there is something else wrong. Any ideas? Could another bulb from the actual tail-lights be causing it?
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-20-2004, 10:05 PM
New Member
 
Last photo:
Join Date: Aug 2004
Location: Wisconsin
Posts: 8
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It souds like the third brake light is wired wrong and feing back through the brake switch. I would try to totally unhook the third brake light and see if it clears up the cruise problem
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 08-20-2004, 11:24 PM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 62
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
quick thought...

[color=yellow]Doc

Just a real quick thought, did you recently have a trailer hitch installed, or tow a trailer? Miswires and shorts are common at the hitch plug...

other than that, you need to locate the 3 Rd light wires, With a DMM , find which wires are hot when the headlights/park lights are on, and which wires are hot only with brake lights.

Though I do not believe the 3Rd light should be on when the lights are on, with 2 bulbs , although It would seem that it was intended to be that way.

Make sure that one bulb has Brake light power and ground on it only.

The other will be Tail light power and ground only and will be the dimmer of the 2 bulbs.

Do not tie both power wires together...

BTW, if it's working that way now, All your brake lights Should on anytime you turn the headlights on too...not a good thing with a tailgater...

Also if the grounds were tied together before going to a ground wire, and you lost one ground it would backfeed through the other bulb looking for a ground, so use two separate hard grounds..

Doc
[/color]
__________________
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



All times are GMT -6. The time now is 05:06 PM.


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.