99' F350 7.3. I have a bunch of broken electrical connections from the rear main loom to the tail lights and trailer plug very close to the pigtail connector. I would like to just purchase new pigtail connectors and rewire to the loom, but I cannot find a part number. Can anyone point me in the right direction? For clarity, the connector on the right branches off the main loom that rides the frame rail, and connects to the connector on the left that controls, turn signals, brake lights, hazards, license plate lights etc...

 

Which connector(s) by number CXXX you want to take a look at so you can confirm so that I can get you the part number on the next step.

 

I'm having a hard time zooming in close enough to see with detail, but I believe it would be C401 (the one that branches off main loom to the rear lamps)

 

Also have a look at this: https://www.ebay.com/itm/145816229926
I don't think you can buy just the pigtail, it would be the whole harness, and it's expensive even when it's used.
If I were you I would buy a connector pins kit like this: and just depin and repin yourself. Your connectors aren't broken just that the wires are messy, but it's not wise to spend $100+ just to beautify the wiring, nobody else beside you will look at them. You just need to wire them correctly and test, then make permanent connection using uninsulated butt connector plus heat shrink them. I'd avoid any type of quick connect terminals (if you are going to disconnect for any reason you disconnect the big connector). To beautify and protect them without spending too much, get non-split wire loom from aliexpress (usually 3 to 5 days free delivery if you are in west coast). Anyway, if you need further diagram don't hesitate to let me know which one.

 

You might find all of what you want in a salvage yard
A simple phone call or two will let you know who has what and most times you can take all you need for a fraction of the price of new and accomplish the same thing.There is no difference here between new and used and while there might find some other things you need `/.

Today they are called salvage yards , yesterday they were called junkyards. Its like going to a yard sale, lol.

One person's junk is another person's treasure.

 

Amazing. Thank you very much for the diagrams. I figure I will either re-pin the existing connectors or just bypass the connector and hardwire them at this point. I felt it was a long shot to find the connectors without purchasing an entire wiring harness, but figured this was a good place to find out.

 

Does it happen to denote anywhere the size of the wire? I'm guessing either 20AWG or 18AWG.

 

The size not shown.
But 18AWG should be plenty for the rear lights. You can tell if you need to run a rear door lock actuator, say on econoline van, Ford recommends minimum 14AWG on the fronts and the side, the rear with longer run (30+ FT) 12AWG is suggested even though that draws around 4.5A per actuator.

 

Copy that. Thanks again.

 

Please keep the thread updated - especially when the issue is resolved!