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Negative Battery Cable Pigtail

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sgauvry

Negative Battery Cable Pigtail

The 1985.5 Ford F150 5.0 has a negative battery cable with a pigtail. That pigtail connects to a very small cylindrical plug that runs to and connects to a plug in connector in another part of the harness that is close to the test connector. As I understand the diagram, that then runs to the EEC for ground.

Does anyone know where I can purchase the cylindrical plug wire that runs to the plug-in connector? It is my understanding that connection is absolutely necessary for things to work correctly.

If such a part is no longer available, would a solder connection at both ends work well?

Steve

Steven A. Gauvry - 1985 F150 5.0 EFI

85lebaront2

Re: Negative Battery Cable Pigtail

Administrator

Steve, if you have a good picture, I have a good size collection of Ford connectors. You are both right and wrong in your assessment, the wire does go to the EEC harness, but it is used for grounding the entire EFI system, not the other way around. Yes, a bad ground and it will either not run at all or poorly. My son simply splices enough on the end of the EFI harness he could use a 5/16" lug and and extra nut on the negative battery cable.

Bill AKA "LOBO" Profile

"Getting old is inevitable, growing up is optional" Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator Wife's 2011 Flex Limited Daily Driver 2009 Flex Limited with factory tow package Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413

FuzzFace2

Re: Negative Battery Cable Pigtail

In reply to this post by sgauvry

I think I know what you are talking about even with out a picture.
Standard makes crimp on connectors of male & females type.
https://www.lawsonproducts.com/Snap-Plugs-Receptacles/Terminals-Wire-Connectors/Electrical/EL600550.lpc
If me and did not worry if stock or not I would look into weather pack connectors and replace both sides.
https://www.delcity.net/store/Weather-Packs-&-Accessories/p_797633.r_IS1028?&mkwid=sHwH5FKfm&crid=78412949309&mp_kw=delphi%20weather%20pack%20connectors&mp_mt=b&gclid=EAIaIQobChMI6sv79bD02QIVi0oNCh0ofQ9AEAAYASAAEgL83PD_BwE
Dave ----

Dave G.
81 F100 flare side 300 six / AA OD / NP435 / 2.75 gear
http://cars.grantskingdom1.com/index.php/1980-Ford-F100?page=1
81 F100 style side 300 six/SROD parts truck -RIP
http://cars.grantskingdom1.com/index.php/1981-Ford-F100

85lebaront2

Re: Negative Battery Cable Pigtail

Administrator

I don't have any pictures of the weatherproof two pin connectors for the 0.110" pin and socket, but I believe that's what he needs.

Bill AKA "LOBO" Profile

sgauvry

Re: Negative Battery Cable Pigtail

Thanks,all!

I will provide pics tomorrow.

Steven A. Gauvry - 1985 F150 5.0 EFI

sgauvry

Re: Negative Battery Cable Pigtail

In reply to this post by 85lebaront2

Thanks, Gary. What you said is what i meant. I worded it poorly.

Might want to take you up on your offer for the right connector. Will send a pic tpmorrow.

Steven A. Gauvry - 1985 F150 5.0 EFI

85lebaront2

Re: Negative Battery Cable Pigtail

Administrator

Steve, I'm not sure if Gary's got that, I do, should have both halves once I see the pictures.

Bill AKA "LOBO" Profile

Gary Lewis

Re: Negative Battery Cable Pigtail

Administrator

Lol! Gary doesn't have it, but Bill knew who you meant, Stan.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

sgauvry

Re: Negative Battery Cable Pigtail

In reply to this post by 85lebaront2

Sorry, Bill. The mind isn't very sharp these days.

Steven A. Gauvry - 1985 F150 5.0 EFI

sgauvry

Re: Negative Battery Cable Pigtail

In reply to this post by Gary Lewis

Did it again, didn't I?

Steven A. Gauvry - 1985 F150 5.0 EFI

Gary Lewis

Re: Negative Battery Cable Pigtail

Administrator

I don't think anyone is worried about it. But it was funny.

Gary, AKA "Gary fellow": Profile

sgauvry

Re: Negative Battery Cable Pigtail

In reply to this post by 85lebaront2

Hi Bill!

Here's a pic of the connector at one end. The connector is in good shape. Sorry about the photo quality; my flash drowned out the appearance but I'm sure you know the connector I speak of.

Here's a pic of the negative battery cable with pigtail.

What I need is the wire with connectors that plugs into the pigtail and the harness connector. I'm certain I can easily fashion one by soldering ends to wire that will plug into both connections. No point to send one unless you think I really need to use an original.

Thanks!!

Steven A. Gauvry - 1985 F150 5.0 EFI

85lebaront2

Re: Negative Battery Cable Pigtail

Administrator

Ok, that one looks like one of the nice pull-apart connectors Ford was slowly phasing out in the late 80s. The ones I have (I won't be able to get you a picture till tomorrow) are the newer style that was coming into use as those were being phased out. These had a male and female half and the back (wire end) has a rubber seal the wires pass through and the male pins are in a recessed housing with an O-ring seal where the female sockets are. Here is what the pins look like:

Female .110

Male .110

These are both available new from Dorman.

Engine looks sharp sir!

Bill AKA "LOBO" Profile

sgauvry

Re: Negative Battery Cable Pigtail

Thanks, Bill, for the information and about the comment on my engine. Here's another pic:

Still have to install the passenger side header, tranny stick, thermactor pump, alternator, belts, etc., but she's almost ready to go!

I'm creating a nice air intake system also with some wonderful stuff I found at Pegasus racing. I'll send pics once it's all put together.

With regard to my inquiry about grounding the EFI system, I'll be using similar connectors as you describe.

Steve

Steven A. Gauvry - 1985 F150 5.0 EFI

85lebaront2

Re: Negative Battery Cable Pigtail

Administrator

Definitely nice looking! Here is what will be going in Darth later:

Bill AKA "LOBO" Profile

Gary Lewis

Re: Negative Battery Cable Pigtail

Administrator

Both of those engines look GOOD! Well done, guys.

Bill - Are you going to send me the stripped upper plenum? No hurry, but seeing that one reminded me.

Gary, AKA "Gary fellow": Profile

85lebaront2

Re: Negative Battery Cable Pigtail

Administrator

Thanks, it looks better with the nicer chrome painted valve covers since no one makes nice aftermarket ones for EFI 460s. Yes, I will, but figured no rush on it.

Bill AKA "LOBO" Profile

Gary Lewis

Re: Negative Battery Cable Pigtail

Administrator

No hurry at all.

Gary, AKA "Gary fellow": Profile

sgauvry

Re: Negative Battery Cable Pigtail

In reply to this post by 85lebaront2

Wow! That's going to scream!!!

Steven A. Gauvry - 1985 F150 5.0 EFI

85lebaront2

Re: Negative Battery Cable Pigtail

Administrator

Steve, I don't know about scream, 9.3:1 compression, mild cam .030 over for 466.3 ci, but, Darth weighs 6400 lbs empty and has a 3.55 gear with 215/85R-16 tires. 55 mph in OD (E4OD trans) is 1500 rpm. I will not put headers on (ask Gary about headers + 460), but since Darth is a 1986 > 8500 GVWR truck, non-catalyst.

Bill AKA "LOBO" Profile