Help - Page 2 - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 22Likes
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #16 of 27 (permalink) Old Jan 9th, 20, 11:35 PM
Lifetime Premium Member
Al
 
Join Date: Apr 2011
Location: SO CAL...Huntington Beach and Rancho Cucamonga
Posts: 5,273
Garage
Re: Help

Quote:
Originally Posted by Hookem6 View Post
I have no real body ground. Up front I have frame to engine block. In back I have battery to frame.
Add a ground from the frame to the radiator support or a fender. Make sure the ground wire for the headlights and turn signals are attached to the radiator support on a clean metal to metal surface. It wouldn't hurt to add a ground from the frame to the firewall.

Like others have mentioned, you have poor ground to the headlights or parking lights/turn signal housing. You get a backfeed of ground through the headlights or parking lights when they are off. This goes away once they get turned on.
427L88 and RAIDER SS like this.

Last edited by DUTCH MAX HEADWORK; Jan 9th, 20 at 11:51 PM.
DUTCH MAX HEADWORK is offline  
Sponsored Links
Advertisement
 
post #17 of 27 (permalink) Old Jan 10th, 20, 1:47 AM
Tech Team
Lance
 
Join Date: Sep 2005
Location: Ocean Park, Wa. Home of the Rod Run to the end of the World!
Posts: 118
Re: Help

I had all kinds of weird electrical issues when I first put mine together. ('68 Chevelle)
I ended up installing braided ground straps from the block to the frame and 2 more in various spots from the body to the frame.
That solved 90% of the problems.
the headlight switch (only about 8 years old) was the last problem. The tail lights and marker lamps would turn on in the first position, but would turn off when the headlights were turned on I finally pulled the dash (Not easy anymore with arthritis giving me hell) and took the switch apart.
I found corrosion on the contact areas inside it so I wire brushed it to death and lubed it with Dielectric grease.
Grounding problems will give you fits!

It Aint Easy Being Green!


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
68SS CLONER is online now  
post #18 of 27 (permalink) Old Jan 10th, 20, 2:36 PM Thread Starter
Tech Team
 
Join Date: Sep 2019
Location: Denver Colorado
Posts: 48
I appreciate all the help. I noticed when I put negative battery terminal on the battery I get just a little spark. Should that happen on negative side..??
Hookem6 is offline  
 
post #19 of 27 (permalink) Old Jan 10th, 20, 9:07 PM
Gold Member
Gene
 
Join Date: Sep 2000
Location: Buffalo NY
Posts: 14,518
Re: Help

Quote:
Originally Posted by Hookem6 View Post
I put the battery in the trunk. Grounded the engine block to the frame up front. Grounded the battery to the frame. In the trunk...Thoughts...
Ground to sheet metal as well, as factory. Typically this is from bat - right to a front fender. It sounds like its searching for a body ground.

And re NEG ground, yes, it should IF something is drawing. ( even my 67's clock pop a little spark. )

Gene
ACES 3112/Team Chevelle Gold #62
Be big, be a 'builder'!
427L88 is offline  
post #20 of 27 (permalink) Old Jan 11th, 20, 2:24 AM
Lifetime Premium Member
Al
 
Join Date: Apr 2011
Location: SO CAL...Huntington Beach and Rancho Cucamonga
Posts: 5,273
Garage
Re: Help

Quote:
Originally Posted by Hookem6 View Post
I appreciate all the help. I noticed when I put negative battery terminal on the battery I get just a little spark. Should that happen on negative side..??
It will only spark if something is drawing current. A clock, radio, interior lights if the door is open. Something is pulling power if you see a spark. It would be a good idea to figure out what is causing the draw. Your battery is being drained by something when she sits. A battery tender will help prolong the life of your battery If you don't drive the car regularly.

I think te 67 has ground wires from the light housing connector to the inside area of the trunk. Make sure those are clean and firmly attached. Most flashers require a certain amount of amperage draw to get them to function correctly. So if you have a poor ground or burned out bulb, the signal may not function. This will usually illuminate the dash turn indicator bulb solidly without flashing.
Tarheel Chevelle likes this.
DUTCH MAX HEADWORK is offline  
post #21 of 27 (permalink) Old Jan 11th, 20, 10:49 PM Thread Starter
Tech Team
 
Join Date: Sep 2019
Location: Denver Colorado
Posts: 48
Welp. I appreciate all the input. I have checked wires and checked ground and nothing. The only thing I found a little weird is I put my test light on the positive side of battery and no light.. I put test light on negative side of battery and the test light came on..... WTH
Hookem6 is offline  
post #22 of 27 (permalink) Old Jan 11th, 20, 11:20 PM
Lifetime Premium Member
Al
 
Join Date: Apr 2011
Location: SO CAL...Huntington Beach and Rancho Cucamonga
Posts: 5,273
Garage
Re: Help

Where did you put the ground clip for the test light?

Run a ground wire from the battery - to a panel in the trunk floor to ground the body. You have poor body grounding. Your frame is grounded, but semi insulated by the rubber bushings and rusty bolts.
DUTCH MAX HEADWORK is offline  
post #23 of 27 (permalink) Old Jan 11th, 20, 11:52 PM Thread Starter
Tech Team
 
Join Date: Sep 2019
Location: Denver Colorado
Posts: 48
I sanded off a clean spot on the frame by left fender. Went and got new battery and it lite up the test light the right way. Positive lite up..negative did not.
Would a person need to put a relay on the headlights..???
Hookem6 is offline  
post #24 of 27 (permalink) Old Jan 12th, 20, 12:10 AM
Lifetime Premium Member
Al
 
Join Date: Apr 2011
Location: SO CAL...Huntington Beach and Rancho Cucamonga
Posts: 5,273
Garage
Re: Help

Quote:
Originally Posted by Hookem6 View Post
I sanded off a clean spot on the frame by left fender. Went and got new battery and it lite up the test light the right way. Positive lite up..negative did not.
Would a person need to put a relay on the headlights..???
The relay on the headlights is a modification we do on these older cars to get full voltage and brightness to the headlights. It's like a bandage to restore the workings of long wire run through older wiring system and design. It will have no effect on your turn signal issue.

You don't have a good enough ground connection between your frame and body panels. Read back to the places I said to put a ground cable and I think your turn signal issues should be resolved. You'll need good clean grounds wherever your turn signal housings are grounded.
Tarheel Chevelle likes this.
DUTCH MAX HEADWORK is offline  
post #25 of 27 (permalink) Old Jan 12th, 20, 12:47 AM Thread Starter
Tech Team
 
Join Date: Sep 2019
Location: Denver Colorado
Posts: 48
Ok. I will give that a shot tomorrow. Getting very frustrating.
Hookem6 is offline  
post #26 of 27 (permalink) Old Jan 12th, 20, 2:57 AM
Lifetime Premium Member
Al
 
Join Date: Apr 2011
Location: SO CAL...Huntington Beach and Rancho Cucamonga
Posts: 5,273
Garage
Re: Help

Quote:
Originally Posted by Hookem6 View Post
The only thing I found a little weird is I put my test light on the positive side of battery and no light.. I put test light on negative side of battery and the test light came on..... WTH
I asked where you had the clip of the test light connected. The light coming on when connected in this fashion tells me that whatever panel you had the clip hooked to has poor ground and the ground circuit was flowing current through the light because something in the car was pulling current and connecting the test light in this fashion supplied a good ground.

When your battery was in the stock location in the engine bay, there was a ground wire that ran from the neg batt post to the fender. This grounded the body to the battery. When you moved the batt to the trunk and grounded only the frame your body lost path to ground as the frame is isolated from the body and radiator support by rubber bushings. Your engine is isolated from ground by the rubber trans mount and engine mounts.

Most Chevelles will have a ground wire from the batt neg to the fender. A ground strap between the right inside of the frame to the firewall. A ground strap between the engine and firewall. It would not hurt to add a ground strap from the current trunk batt to a body location in the trunk. If you have ground straps in these locations, the terminals may be corroded or otherwise have a bad connection.

Sometimes we will see certain body panels with poor ground. An example would be radiator support in a fresh restore where the panels have been painted in pieces then reinstalled. The paint inhibits a good ground connection. This can happen on old panels too due to crusty corrosion between the parts.
Attached Thumbnails
Click image for larger version

Name:	GROUND STRAP LOCATIONS 70 CHEVELLE AIM.jpg
Views:	8
Size:	119.5 KB
ID:	613328   Click image for larger version

Name:	ground strap set 67 68 69 Chevy Chevelle Malibu El Camino 327 350 396 427.jpg
Views:	8
Size:	23.3 KB
ID:	613330  
Tarheel Chevelle likes this.
DUTCH MAX HEADWORK is offline  
post #27 of 27 (permalink) Old Jan 14th, 20, 9:25 PM Thread Starter
Tech Team
 
Join Date: Sep 2019
Location: Denver Colorado
Posts: 48
I appreciate all the advise and help. Finally figured it out. The blinker housing wasn’t getting a good ground. So thanks Chevelle family. Much appreciated.
Hookem6 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
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. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome