Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


Previous Thread
Next Thread
Print Thread
Rate Thread
#381185 12/30/16 11:17 PM
Joined: Oct 2010
Posts: 1,004
Likes: 5
Hawkeye Offline OP
ChatMaster - 1,000
OP Offline
ChatMaster - 1,000
Joined: Oct 2010
Posts: 1,004
Likes: 5
Has anyone added an extra ground strap to their 6 volt system? If you have, where did you locate it and what length strap did you use? Thanks

Joined: May 2002
Posts: 6,149
Likes: 41
ChatMaster - 6,000
Offline
ChatMaster - 6,000
Joined: May 2002
Posts: 6,149
Likes: 41
I have not added ground straps to many systems but when I do I make sure the heavy lead is connected between the starter and battery with the auxillary straps between body and battery. I have also run a earth strap from individual lights and battery as a test when fault finding, some of these are still in place many years later.
Tony


1938 1/2 ton Hope to drive it before I retire
Joined: Dec 2011
Posts: 1,019
Likes: 3
ChatMaster - 1,000
Offline
ChatMaster - 1,000
Joined: Dec 2011
Posts: 1,019
Likes: 3
Hello Hawkeye,

I have a 1937 MD 4dr sedan. During a 2 year up-grade of all the systems, I added grounds to anything that had a current running thru it.

One problem that seemed to come to light in our forum was electrical stuff either not working or working intermediately. I decided that adding grounds to the system was worth the effort.

After installing a complete wire harness I did the following... (all is done with black 14 gauge wire except where noted)

I started by adding a ground block above the left kick panel. Connected a wire from the block to the brace it is mounted to. I then ran a wire from the first terminal of the block to the battery. Daisy chained each point from there with metal jumpers.

The headlights, both sides, the front fender marker/directional lights/ rear tail lights are all grounded back to this block as is the heater/defrost motors. The gas tank sending unit also grounded there. And the dash cluster has a ground wire. The cigerette lighter is also grounded but the power wire is connected to 6/12 volt converter for my phone charger/gps power.

The ignition distributor has a ground wire from the distributor cap location tab to the junction block mount bolt on the right side.

The grounds for the headlights and markers meet at the bolts that hold the junction block mounted on the inside of the radiator core support. I ran a wire from the right side of the car to the left side of the car, then ran another wire from the left junction block mount bolt to the inside of the car to the terminal block mounted above the left kick panel.

I also added ground straps between the fuel fill pipe and the gas tank and from the gas tank to the frame.

As for the battery ground, instead of the strap, I used a 1/0 cable from the battery to the transmission.

I also used a 1/0 cable for power to the starter.

So everything grounds back to the battery, this I have been told is over kill, but it gives me piece of mind.


Dave
old cars are meant to be driven !!
VCCA # 047832
Joined: Oct 2010
Posts: 1,004
Likes: 5
Hawkeye Offline OP
ChatMaster - 1,000
OP Offline
ChatMaster - 1,000
Joined: Oct 2010
Posts: 1,004
Likes: 5
What I ended up doing was attaching a Standard brand 10 gauge braided grounding strap from the engine mount bolt (just under the starter) to the frame. When it gets a little warmer, I plan on running another ground strap from the body to the frame. This way the engine is grounded as well as the body.

[Linked Image from i1311.photobucket.com]

Joined: Oct 2007
Posts: 2,306
ChatMaster - 2,000
Offline
ChatMaster - 2,000
Joined: Oct 2007
Posts: 2,306
Hi Hawkeye,

Just want to add my two sense by pointing out the importance of making sure you remove the paint under the area where you want to attach ground wiring. Easy to have a thick layer of paint between the surfaces and wonder why the ground is poor. Also consider a coat of electrical grease to inhibit the potential of corrosion. The pros an cons of this are explained in this link. Dielectic Grease Verses Conductive Grease

Likewise, cleaning up bolts in a sandblast cabinet and then painting them with a coat of POR 15 will improve your odds of fighting corrosion but do the opposite for improving grounding.

Lastly, it is always a concern that the connection is good and tight, and the appropriate lock washers keep it that way.


Good luck, Mike


Mike 41 Chevy
Joined: Oct 2010
Posts: 1,004
Likes: 5
Hawkeye Offline OP
ChatMaster - 1,000
OP Offline
ChatMaster - 1,000
Joined: Oct 2010
Posts: 1,004
Likes: 5
I did remove all the paint from the frame. The frame was sandblasted so the new paint was removed easily. I cleaned all the new and old fastners as well as the lugs on the new strap, used dielectric grease on all contact points, change the lock washer on the motor mount to a "star" type washer and tighten eveything.

Joined: Jun 2009
Posts: 42
Shade Tree Mechanic
Offline
Shade Tree Mechanic
Joined: Jun 2009
Posts: 42
Hi all,

My preferred way having always a good electrical connection over a long time : using Belleville serrated washers instead of washers like < helical spring / teeth inside outside / normal one's > and if optical possible a self locking nut - the one with the plastic ring inside. ( if necessary - cover the naked outside of the the base / sheet connection with a primer )

the really great advantage of Belleville washers > heavy load is no longer a problem / cheap (don't use it a second time)

The Engineer's Companion

BTW : mechanical reliability || Belleville washers or wedge lock washers

Have a nice time
Norbert

Last edited by Derek54; 01/09/17 06:28 AM.

Link Copied to Clipboard
Support The VCCA!

Enjoy the forum? Become a VCCA member! The World's Best Chevrolet and GMC Club!


Member Photos
1964 Chevrolet Impala SS
1964 Chevrolet Impala SS
by DreamChevy, February 17
My 1933 Chevy 2 Dr. Sedan
My 1933 Chevy 2 Dr. Sedan
by 1939Chevy1, November 24
Back on the road 79 years later
2 1927 Chevrolet Trucks
2 1927 Chevrolet Trucks
by 1927TRUCKS, June 7
Who's Online Now
1 members (NeilA), 71 guests, and 18 robots.
Key: Admin, Global Mod, Mod
Newest Members
NeilA, Jayhicks, Tomvanhouten, Dads29Chevy, Tractorman
18,308 Registered Users
Today's Birthdays
aristech, RalphL, tonysk
Forum Statistics
Forums58
Topics59,069
Posts429,046
Members18,308
Most Online1,133
Jan 22nd, 2020
 

Notice: Any comments posted herein do not necessarily reflect the official position of the VCCA.

Powered by UBB.threads™ PHP Forum Software 7.7.5