![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Driven a 72
Join Date: Nov 2008
Location: Minnesota
Posts: 166
|
Electrical Nightmare Please Help
Ive got a electrical nightmare, Ok so here are my symtoms.
Headlights on blinkers wont work at all. Headlights off blinkers work but both rear blinkers blink. Step on brakes with lights off and dash lights light up. Any suggestions?
__________________
1996 GMC JIMMY 1972 CHEVY C10 LWB My 72 c/10 Build: http://67-72chevytrucks.com/vboard/s...d.php?t=318729 |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Mar 2009
Location: Liberty, Missouri
Posts: 35
|
Re: Electrical Nightmare Please Help
Time to check all the grounds,and check all the wires for shorts, but i would make sure all the grounds are good first,bad grounding can cause some funny things to happen.
|
![]() |
![]() |
![]() |
#3 |
Registered User
![]() Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,514
|
Re: Electrical Nightmare Please Help
It does sound like a ground problem with the taillights.
One more thing to check that tends to cause problems on these trucks is a cobbled up trailer wire connection that someone put on at one time or another. Those can be a prime source of shorts and messed up connections if they were not done right. |
![]() |
![]() |
![]() |
#4 | |
Registered User
Join Date: Mar 2009
Location: Liberty, Missouri
Posts: 35
|
Re: Electrical Nightmare Please Help
Quote:
|
|
![]() |
![]() |
![]() |
#5 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
|
Re: Electrical Nightmare Please Help
i would start off with new bulbs and checking the grounds
|
![]() |
![]() |
![]() |
#6 |
Driven a 72
Join Date: Nov 2008
Location: Minnesota
Posts: 166
|
Re: Electrical Nightmare Please Help
Thanks all I will post up some pics of the mess that is in the back. I think it may be a trailer light setup. Also does the engine have to be grounded to the firewall or can it be the frame?
__________________
1996 GMC JIMMY 1972 CHEVY C10 LWB My 72 c/10 Build: http://67-72chevytrucks.com/vboard/s...d.php?t=318729 |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Feb 2008
Location: Huntsville, AL
Posts: 197
|
Re: Electrical Nightmare Please Help
I had similar issues when installing a new Painless harness. Turned out to be ground issues. I grounded 4 places: engine-chasis, engine-frame, chasis-frame, bed-frame. All with braided straps, cleaneaned to bare metal and coated with dielectric grease. No problems now.
Last edited by soule64; 04-01-2009 at 01:11 PM. |
![]() |
![]() |
![]() |
#8 |
Project Junkie! Fishing Poor!!
![]() Join Date: Dec 1999
Location: Olympia,Wa. 98512
Posts: 10,770
|
Re: Electrical Nightmare Please Help
Sounds like the headlight switch has failed and you are getting electrical feedback through it once you turn your headlights on. Replace the switch and also check your grounds like everybody else says. I had a simeler problem on the Blazer that is in my shop now, but the new headlight switch solved it. WES
__________________
On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys |
![]() |
![]() |
![]() |
#9 | |
Registered User
![]() Join Date: Sep 2007
Location: Fairdale, Kentucky
Posts: 561
|
Re: Electrical Nightmare Please Help
Quote:
Good luck... |
|
![]() |
![]() |
![]() |
#10 | |
Driven a 72
Join Date: Nov 2008
Location: Minnesota
Posts: 166
|
Re: Electrical Nightmare Please Help
Quote:
__________________
1996 GMC JIMMY 1972 CHEVY C10 LWB My 72 c/10 Build: http://67-72chevytrucks.com/vboard/s...d.php?t=318729 |
|
![]() |
![]() |
![]() |
#11 |
Registered User
Join Date: Mar 2009
Location: Liberty, Missouri
Posts: 35
|
Re: Electrical Nightmare Please Help
Yes you need ground straps from the frame to body and motor to body,or else the only ground path is through the body mounts and that is not a good ground path.
|
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: Feb 2008
Location: Huntsville, AL
Posts: 197
|
Re: Electrical Nightmare Please Help
On mine, the engine-chasis was on the p/s cylinder head to a large machine screw on the firewall. The Chasis-frame strap went from the p/s fwd cab support to a hole in the top of the frame.
|
![]() |
![]() |
![]() |
Bookmarks |
|
|