Fuel Sending Unit - Wire from connector to pump - Part Number Question

Can anybody tell me the OEM part number for the wire that connects the fuel pump to the connector on top of the tank?

I ordered a new fuel pump from Toyota and it did not include a new one of these wires and thought why not replace it while I'm in there. Many aftermarket pumps include this wire but require a little bit of electrical wiring set up needed.

I've included a picture for reference of, an old one being sold on ebay, where the green squares show the two connecting spots.

Thanks!

 

Dumb question, but was Toyota not able to provide you that part number? I’d call the parts guy and ask.

 

Better to just email them the pic and ask. They always have the more detailed diagrams with part numbers on their system.

 

Could this possibly be what you need?

$13 AUTOKAY New 90980-11077 Connector 5-way 5 pin Fuel Pump Compatible with Hyundai Black

Amazon.com: AUTOKAY New 90980-11077 Connector 5-way 5 pin Fuel Pump Compatible with Hyundai Black : Automotive

 

They were not able to give me the part number. This is the image they sent me of what they were looking at:



They said I had to buy the whole tube/sub assembly thingy. Which I did, actually, to replace my old one, but it did not include the wire from the connector to the fuel pump.

 

That is not what I need. That connects the upstream wiring to the connector on top of the tube/sub assembly on "top" of the tank. The wire I need sits inside the tank, connecting the underside of the connector to the fuel pump.

 

That pic shows the wire is part of the assembly. I’d call the dealer you bought it from and explain it was missing.

 

Just called them (midlands toyota). They don't see the part on their diagram or anywhere else.

 

First off, look up your own parts.

Fuel pump parts for 2000 year in the EPC are under Engine, fuel system and tools ---> Fuel injection system
Tank, sender, housing assembly, etc for 2000 in EPC are under Body and interior ---> Fuel tank & tube

I broke this down for a 2004, but I'm not sure the parts are the same: https://www.tundras.com/threads/2004-fuel-line-replacement-tips.150671/#post-3757520

In fact, I'm quite certain they're not.

 

If they’re able to call up the same image as below, they should clearly see it’s part of the assembly.

 

So funny thing happened, the diagram I posted is not the "correct" diagram according to midlands toyota. It's apparently just a generic diagram of a 1st gen tundra suction tube assembly that my local dealership sent to me, not knowing it was generic and not specific to my truck.

Midlands keeps referencing this diagram:



Which does not show any wires or anything. The fuel pump diagram they are using is this:



Which also does not show any wires. I looked these both up using Shifty's advice, and nothing. I talked to my local dealership and they are going to order 77203-0C021 in to see if it comes with a wire, which is the only way to verify.

I did find 23237-0C010 (Fuel Lead Wire or Fuel Pump Wiring Harness), albeit it is for a 1995-2001 tacoma, but wondering if it provides the same electrical functionality (voltage/gauge), as the fuel suction/pump/etc. look very similar:

 

I’ve posted the full blown-up and assembly for the earlier years. I’ve had to look up these parts for a few people. Toyota has them spread out over three different diagrams.

 

That’s probably the best thing you can do. I looked up the EPC parts site @shifty` mentioned and couldn’t find it as well.

 

I couldn’t find it in the EPC either. The EPC and various dealer diagrams really suck for electrical wires and connectors on early FGTs. I’d think pretty good odds one of the other fuel pump harnesses would fit. Some start with part number 77785-

 

It's right here guys, under Electrics --> Switch & Relay (this is a random 2000 V8/4WD VIN I found): https://toyota-usa.epc-data.com/tundra/uck40/3802/electric/8401/83320/?frame_no=5TBBT4412YS029804

I just needed to dig up one of my older replies to find it. They hide fuel parts in three places. Nearly all senders are in Switch & Relay, always. Then there's the tank and pump housings and tube parts. Then there's the actual fuel injection parts with pump and such. Was in a hurry earlier and couldn't dig more.

In later years, they move the sender (or Switch & Relay) under the Body & Interior section (example)

​

 

That looks like the same part number to the fuel sending unit shown in the first post along with the pump.

 

Aaaaah, ok. I think I misunderstood the post. I'm pretty sure that's part of the sender assembly and the wire isn't sold separately, which is not uncommon. Is this wire showing with the green sleeve on it not the correct wire?!

​

 

That looks like it. He isn’t going to get the wire without ordering the sender from the looks of it.

The suction tube part they’re getting for him for comparison isn’t going to have anything from the sender.

 

EPC is pretty clear about what it includes, and it looks like it's just the housing.

​

 

When everything is included, EPC is very clear about that. It appears like this, for my 2006, where you clearly see the wires, the sender, the housing, the pump, and float and all that, boxed in the same container with "77020A" pointing at the box to indicate clicking "77020A" is giving you the part number for all those things boxed up.

​

 

The green wire showing in the photo that Shifty posted is not the wire I need. There are two wires that connect to the "underside" of the connector that sits at the top of the suction tube assembly. One wire goes from the connector to the gauge assembly unit (which is the green wire). The other wire goes from the connector to the fuel pump, which is the wire I need.

I bought the gauge assembly unit which includes the green wire. The fuel pump and/or the suction tube assembly does not include the wire I need, nor does the gauge assembly, at least in the parts I received from midlands Toyota.

Nobody from midlands toyota or from my local dealership could tell me what part number I'm looking for or what assembly might include it. I'm hoping that the original suction tube assembly was just accidentally missing the part, which is why I had the local dealership order a new one to see, which I wont be charged for.

 

If the connector you want isn't there, the only other place Toyota keeps things in the EPC for things that don't show up is in Electrics --> Wiring & Clamp.

On that sample 2000 V8 4WD VIN I pulled, here: https://toyota-usa.epc-data.com/tundra/uck40/3802/electric/8202/?frame_no=5TBBT4412YS029804

And if there's nothing in the schemas, which I don't see in 1 - 5 or 7 in that link, then you'd need to refer to the connector list (schema 6 and 8) to buy the connectors and build your own, I think?

Super freaking weird.

I can tell you with 100% certainty the part number will start with 77785-

77785-0c010 is for 2000-2004 Tacoma ...
77785-0c020 is for 2004-2006 Tundra ...
77785-0c030 is for 2007-2019 Tundra ...

Maybe the Tundra shares the part with the Tacoma?

I just found 77785-30041 digging around in the Toyota national parts site when searching on a 2000 Tundra and entering "77785-" prefix in the window, and 77785-33030 also, but nobody will tell me what years it fits.

 

If you have the connector in front of you and want to compare to that Tacoma part, here you go, lots of nice pics: https://www.ebay.com/itm/185856569835

 

While it's true most of the after market pumps come with a connector to pump and short length of 2 conductors to splice into original connector that plugs into main suction tube, I personally would not be concerned with the original 2 conductor harness for fuel pump. I realize that does not answer your question and I can be as anal as the next person but you'll probably only find that harness by buying the whole unit that comes with suction tube, sending unit and fuel pump.

The below unit is out of a 2000 Tundra and I personally would not be concerned using the original 2 conductor harness for fuel pump.
IMHO, there would have to be a very extenuating circumstance for me wanting to go that far if it were mine.