Corroded Connector Location
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Tuned
Joined: May 2015
Posts: 385
Likes: 1
Corroded Connector Location
Hi All,
I keep hearing about this connector somewhere near the spare tire that has been causing electrical issues for a bunch of people. I am thinking of checking it out on my truck, does anyone have a better description of where the connector is located?
Thanks!
I keep hearing about this connector somewhere near the spare tire that has been causing electrical issues for a bunch of people. I am thinking of checking it out on my truck, does anyone have a better description of where the connector is located?
Thanks!
Fleet Mechanic
Joined: May 2017
Posts: 1,382
Likes: 13
It's the big white colored connector behind/above the spare tire. I don't know how to link other threads but the title says...2017 major electrical problems...it was started in March of '18, many, many pages.
Laughing Gas
Joined: Aug 2002
Posts: 896
Likes: 12
From: Kenna,wv
Originally Posted by TCNashville
I dielectric greased all the connectors I could find back there. I think I did 4 or 5.
Mountain Pass
Joined: Mar 2020
Posts: 149
Likes: 9
From: San Juan Capistrano CA
Well, I finally got around to inspecting that 20 pin plug on the right rear frame rail next to the spare tire. Took me this long because this problem did not reappear after occurring once. I pulled the plug apart and it looked ok, other than the fact that a bunch of sand fell out. Blew it out with air and reassembled it with a smear of dielectric grease on the surface of the female connector. Truck works fine now. Let's see what happens the next time it rains.
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Cargo Master
Joined: Mar 2005
Posts: 2,368
Likes: 620
Well, I finally got around to inspecting that 20 pin plug on the right rear frame rail next to the spare tire. Took me this long because this problem did not reappear after occurring once. I pulled the plug apart and it looked ok, other than the fact that a bunch of sand fell out. Blew it out with air and reassembled it with a smear of dielectric grease on the surface of the female connector. Truck works fine now. Let's see what happens the next time it rains.
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Mountain Pass
Joined: Mar 2020
Posts: 149
Likes: 9
From: San Juan Capistrano CA
See thread titled "Service Advance Trac, Hill Start Assist Not Available and Hill Descent Control Fault Messages"
[size=13px]This has been traced to the corroded connector referenced in my post.[/size]
Tuned
Joined: Nov 2016
Posts: 308
Likes: 14
Cargo Master
Joined: Jul 2003
Posts: 3,358
Likes: 250
It was recommended to use motorcraft xg-12 grease since it's supposed to be better than dielectric grease.
Cargo Master
Joined: Oct 2011
Posts: 2,877
Likes: 770
From: SoCal/Wyoming
So, do you goop up the actual connections or do you put it around the two pieces that click together to form a seal before the actual connections...if that makes sense. Additionally, do you cover the outside of the connector where the wires go into the cap? Not sure if they are sealed down in there. Have never really needed to use dielectric grease much so not sure just where/how much is needed. I guess I could always go with the “more is better” approach and cover the entire thing.
Mountain Pass
Joined: Mar 2020
Posts: 149
Likes: 9
From: San Juan Capistrano CA
I just put a thin layer of dielectric grease on the female side of the connector and plug it back in. You just want to make sure that the actual contact surface is surrounded by some grease. The contacts will break through the grease to make contact and the grease protects them from corrosion. The fact that the grease is a dielectric prevents any cross tracking. I have used the same technique for years on all the electrical connectors on my boat (which lives in salt water) and it seems to make a very reliable connection.
More Turbo
Joined: Jan 2016
Posts: 574
Likes: 39
I just put dielectric grease on last weekend to all the connectors I could find at the rear on the truck. Started doing it without dropping the spare but holy cow, dropping the spare made all the difference. Right or wrong, I placed the grease on the inside housing so when placed together, I'm hoping it creates a seal. SARDiverDan, I think what you described is what I did. I didn't put very much in there but enough to feel it would seal. I also packed the outside wires just in case they are not sealed from the back side. If others have suggestions, I'm all ears since this was the first time doing this.