The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Electrical

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-28-2016, 10:55 PM   #1
erick64
Registered User
 
erick64's Avatar
 
Join Date: Dec 2016
Location: el centro Ca,
Posts: 5
dash lights out when headlights on!! Help!!

My 64 c10 dash lights turn off when I turn my headlights on. Anyone had this problem before?
erick64 is offline   Reply With Quote
Old 12-29-2016, 03:51 AM   #2
VetteVet
Msgt USAF Ret
 
VetteVet's Avatar
 
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 7,603
Re: dash lights out when headlights on!! Help!!

Quote:
Originally Posted by erick64 View Post
My 64 c10 dash lights turn off when I turn my headlights on. Anyone had this problem before?
Here's the headlight switch diagram. The green wire from the switch goes to the fuse panel and from there to the dash lights.



Name:  1 HEADLIGHTSWITCH 2.1.jpg
Views: 72
Size:  35.3 KB
__________________
VetteVet

metallic green 67 stepside
74 corvette convertible
1965 Harley sportster
1995 Harley wide glide

Growing old is hell, but it beats the alternative.
VetteVet is offline   Reply With Quote
Old 12-30-2016, 07:32 PM   #3
erick64
Registered User
 
erick64's Avatar
 
Join Date: Dec 2016
Location: el centro Ca,
Posts: 5
Re: dash lights out when headlights on!! Help!!

this is what my cables look like. any idea witch one should i ground to have dash lights and headlights work at the same time?
Attached Images
  
__________________
64 chevy c10
erick64 is offline   Reply With Quote
Old 12-31-2016, 12:59 AM   #4
VetteVet
Msgt USAF Ret
 
VetteVet's Avatar
 
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 7,603
Re: dash lights out when headlights on!! Help!!

Well after some head scratching and looking at the diagrams, it would seem that the brown (rear lights) and the green ( dash light ) wires would give you what you want.
The orange wire is hot all the time as is the larger red wire.
When the light switch is out half way, the orange wire is powering the green wire and the brown wire but when the headlight switch is all the way out the orange wire only powers the brown rear lights wire and not the green dash lights wire. So it would seem that if you jumped the brown wire and green wire you would have power to the green wire in both positions.
Looking at the third picture of your headlight switch I', m wondering if the bottom two wires are the green dash light and the brown rear taillight wires and if they might not be switched around in the sockets. A continuity check on the two terminals would show how they were connected to the orange wire in relation to the switch position. This would have to be done with the battery unplugged to avoid damage to the meter.
__________________
VetteVet

metallic green 67 stepside
74 corvette convertible
1965 Harley sportster
1995 Harley wide glide

Growing old is hell, but it beats the alternative.
VetteVet is offline   Reply With Quote
Old 01-07-2017, 06:16 PM   #5
erick64
Registered User
 
erick64's Avatar
 
Join Date: Dec 2016
Location: el centro Ca,
Posts: 5
Re: dash lights out when headlights on!! Help!!

i jumped the green to the brown cable and it didn't work.then i jumped it to the orange to red and it worked. its that ok? everything is off when the switch is off
Attached Images
  
__________________
64 chevy c10

Last edited by erick64; 01-07-2017 at 06:22 PM.
erick64 is offline   Reply With Quote
Old 01-07-2017, 07:14 PM   #6
VetteVet
Msgt USAF Ret
 
VetteVet's Avatar
 
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 7,603
Re: dash lights out when headlights on!! Help!!

It would appear that the orange wire was not hoy at the light switch. It is supposed to get a hot feed from the red wire at the fuse panel according the wiring diagram. Then the orange wire feeds the brake switch, the dome light, and the headlight switch with power.

It also feeds the brown wire at he headlight switch when the lights are on. It also feeds the green wire at the headlight switch, which runs through the dimmer on the HL switch for the dash lights. That's why I thought jumping the brown and green wires at the HL switch would power the dash lights in both positions.
It seems that you have solved the problem and as long as you aren't draining the battery when the truck is off and the switches are off I think you'll be fine.
__________________
VetteVet

metallic green 67 stepside
74 corvette convertible
1965 Harley sportster
1995 Harley wide glide

Growing old is hell, but it beats the alternative.
VetteVet is offline   Reply With Quote
Old 01-11-2017, 05:12 PM   #7
erick64
Registered User
 
erick64's Avatar
 
Join Date: Dec 2016
Location: el centro Ca,
Posts: 5
Re: dash lights out when headlights on!! Help!!

thanks for all your help VetteVet!! i got it to work jumping the brown wire and green wire as you mentioned it before. i guess i wasn't making a good contact on the wires. you rock !!!
__________________
64 chevy c10
erick64 is offline   Reply With Quote
Old 01-11-2017, 10:32 PM   #8
VetteVet
Msgt USAF Ret
 
VetteVet's Avatar
 
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 7,603
Re: dash lights out when headlights on!! Help!!

Quote:
Originally Posted by erick64 View Post
thanks for all your help VetteVet!! i got it to work jumping the brown wire and green wire as you mentioned it before. i guess i wasn't making a good contact on the wires. you rock !!!

Hey I'm not just another pretty face you know.
__________________
VetteVet

metallic green 67 stepside
74 corvette convertible
1965 Harley sportster
1995 Harley wide glide

Growing old is hell, but it beats the alternative.
VetteVet is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -4. The time now is 07:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com