![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Feb 2007
Location: Cedar Park, TX
Posts: 20
|
![]()
The 70 C-10 I've got has a wiring problem(stock wiring). The blinkers all work, brakelights work properly, horn, wipers, etc. When the headlights are turned on, the dashlights go bananas. One time there's no light at all on the speedo and one of the turn signals is lit or both are lit...turn the blinker on and various lights in the dash blink on and off. So before I start the search till I die pd...Is this a common problem with a common fault or will I have to spend weeks/months trying to find the source.
Thanks for any help. |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Feb 2006
Location: Oklahoma City
Posts: 588
|
Re: 70 C-10 Wiring Problem
Sounds like a ground.
__________________
1970 Chevy C10 "Under Construction" ![]() 2002 Chevy S10 V6 ![]() |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Apr 2006
Location: MinneSNOWta
Posts: 1,381
|
Re: 70 C-10 Wiring Problem
i would start with the headlight switch.
disconnect the harness from the switch, and use a jumper wire to test your headlights and dash lights. if everything works normally, you know that the switch has issues.
__________________
2003 GMC Sierra 1500 WT 1995 Nissan Hardbody 2016 Hyundai Veloster Turbo DC2 (SW/AW) Clyde W. Harvey USN "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill |
![]() |
![]() |
![]() |
#4 |
It's a catastrophic success.
![]() Join Date: Jan 2003
Location: Oklahoma
Posts: 2,077
|
Re: 70 C-10 Wiring Problem
Bad ground on the instrument cluster.
|
![]() |
![]() |
![]() |
#5 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
|
Re: 70 C-10 Wiring Problem
I disagree with everything said.
Headlight switch has no control over the turn signal indicators. Bad ground, there would be fuel guage complaints too (I am assuming it works) and possibly eng temp guage complaints too. Remove the insturment cluster, twist and remove all the light bulb sockets. There will be at least one hole with no light, mark it if you have to, or take digi-photos for reference. (a drawing would work too) Replace all the bulbs while you have them out, it's only a few bucks. Inspect the printed circuit. Where the bulb holders contact the circuit, look for dirt/corrosion/burn marks. Use a pencil eraser to clean them if anything is found. Do it even if you don't see anything. While replacing the bulbs, you'll see on the holder, where the power comes in, the little metal ears sticking out. Clean them with some fine sand paper... the wife's fingernail file will work in a pinch, but something more fine than that if you can. You can also pull them away fromt he plastic body a little too. not much, just a tad. Put it back together. Adding a ground strap that is probably missing is a very good idea, and I highly recomend it, (I still say that's not the issue, but if it is missing, it may well become the issue) I just use a section of wire. It doesn't need to be thick, speaker wire is plenty. Put eyelets on either end. Attach one to a clean spot on the dash, and the other gets bolted to the steel part of the cluster. |
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Feb 2007
Location: Cedar Park, TX
Posts: 20
|
Re: 70 C-10 Wiring Problem
Thanks for the info. I'll let you know what I find out.
|
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|