Electrical problems... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Broken_down? · 07-14-2004, 12:40 AM

sigh. Now when I turn my right blinker on the head lights blink dim. WTF!! does anyone have a wiring diagram for a 68 chevy pickup? I am getting so frustrated!

Rich

you can email it to me too: viking-s@sbcglobal.net or @ my work: rtorres@buttecounty.net

walker · 07-14-2004, 01:15 AM

You might want to remove your ground terminals, sand the metal bare and screw them back down. Poor grounds cause lots of strange problems. There should be one behind the battery box for the core support. I'd clean the batt cable ground on the engine too, then the ones that connect the engine to the firewall. Take a good look at your battery cables for signs of corrosion.

Broken_down? · 07-14-2004, 02:03 AM

cleaned the bat cables yesterday. I have a ground wire in the rear of the truck just behind the cross member on right side. is this a normal ground? I also have a red wire that runs along the frame to the front of truck to drivers side to a small electrical device. it is next to the F selonid. I will post pics tomorrow after lunch. on the rear wiring harness I have a yellow wire that goes to the right side blinker/brake light. is this normal? cause the otherside don't have that. I will check the ground you posted. Also I forgot to post I do not have any power in my right blinker outside or inside the truck (dashboard). I hate when people rig stufdf up..

A.P. · 07-14-2004, 02:53 AM

Like it was earlier, you have a grounding problem. Here are some wiring diagrams.
http://www.geocities.com/chevroletc1070/wiringdias.html

68C15 · 07-14-2004, 07:24 AM

yellow-left, green-right, brown-tail, dark green-backup. sounds like a problem in r tail light itself as it only does it with r blinker. it is backfeeding through tail-headlight circuit for a ground. also check the "bulkhead" connector on rear of frame. sometimes they corrode inside & make you pull hair out finding the problem.

Broken_down? · 07-17-2004, 12:47 AM

ok here is some pics of the "small electrical device" next to the F selniod.

1.
http://teenhelp.bounceme.net/pictures/1.bmp

2. last..
http://teenhelp.bounceme.net/pictures/2.bmp

Any clue what the hell that thing is??? It has a small red wire that runs to the back of the truck and was stripped exposing wires when I got under there to look. I hooked all wires up right via the colors and did nto seem to matter. could that thing be causing the problems?

Rich

6869704X4 · 07-17-2004, 04:53 PM

Its a junction block. The power for your fuse panel runs through there. IIRC you should have the pos wire from the battery, the charging wire from the alt and one going into the truck at the firewall plug. Check wiring diagrams to be sure.
That wire might have been to run power to the back for something.

69ride · 07-17-2004, 05:51 PM

grounding problem. not having a proper ground does some REALLY goofy things to lights

07-14-2004, 01:15 AM	#2
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	You might want to remove your ground terminals, sand the metal bare and screw them back down. Poor grounds cause lots of strange problems. There should be one behind the battery box for the core support. I'd clean the batt cable ground on the engine too, then the ones that connect the engine to the firewall. Take a good look at your battery cables for signs of corrosion. __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

07-14-2004, 07:24 AM	#5
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	yellow-left, green-right, brown-tail, dark green-backup. sounds like a problem in r tail light itself as it only does it with r blinker. it is backfeeding through tail-headlight circuit for a ground. also check the "bulkhead" connector on rear of frame. sometimes they corrode inside & make you pull hair out finding the problem. __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card

07-17-2004, 04:53 PM	#7
6869704X4 Registered User Join Date: Jul 2002 Location: SE NM Posts: 769	Its a junction block. The power for your fuse panel runs through there. IIRC you should have the pos wire from the battery, the charging wire from the alt and one going into the truck at the firewall plug. Check wiring diagrams to be sure. That wire might have been to run power to the back for something. __________________ The more I learn about women, the more I love my truck.

07-17-2004, 05:51 PM	#8
69ride All Go, No Show Join Date: Jul 2003 Location: Creighton SK Posts: 286	grounding problem. not having a proper ground does some REALLY goofy things to lights __________________ 69 LWB Rebuilt 283, aluminum intake, edelbrock carb, Mild Melling Cam, HEI.

07-14-2004, 02:53 AM	#4
A.P. Black 72 Chevy Join Date: May 2002 Location: Los Angeles, California Posts: 662	Like it was earlier, you have a grounding problem. Here are some wiring diagrams. http://www.geocities.com/chevroletc1070/wiringdias.html



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