Arrow is pointing to 3 wires that were buried in spray foam insulation. Have no idea where they go.

This is what I have running up the passenger side

This is wires I have run up the drivers side. Not sure where these go

So this is my 87 4Runner project that was a factory automatic 22re and is now a manual 22re I bought it like that. All the wiring was a disaster when I bought it. I’m trying to finish it up and my drivers side tail lights are not hooked up. I have the wiring diagrams I’m just not smart enough to fix it from looking at them I guess I need something written out in crayons. Does anyone have any ideas what I’m doing wrong or some pictures that I could go by to help me fix this 4Runner. It’s going to be my sons and he gets his license a month from now.

 

I can post diagrams that will be helpful. But probably tomorrow. Mine will be more than just a wiring diagram
Can you get me a picture of the three wires in the left rear, a picture that clearly shows the wire color and the stripe?
Same for the wires on the passenger floow that has the ecu in it. A close up showing the wires would help a ton. you may have to peel back some of the tape so the wires are visible.

In the photo showing the driver's floor there 2/3 huge wires running up and passing through the firewall? Where are they going?

 

Those are speaker wires in the front running up under the dash and a wire that I ran to the rear window motor to make it run off a new switch.

i also have a ground wire that was stuck in the spray foam too

 

Here is the pics from the passenger side. Everything else seems to work except the tail lights windshield wipers and the fuel gauge. It runs and drive’s great.

 

One last post for tonight.
here's an image of the driver's photo. I labelled the varoius connections from A-F, starting at the top, and working down.
can you tell me the number of wires at each letter, and the color, along with the color of any stripe. Something like "blue with a yellow stripe"
The one with a question mark could use a closer photo.

 

I will get that this evening

 

You have a lot of wire that isn't Toyota. If it's not serving a useful function I'd properly remove.
Those three wires coming out of the left rear tail light(yellow,red,black) were most likely for tow wiring. I'd pull the left tail light assemby(the same screws holding the lens on) and remove. then cover any bare wiring.

Most of the loom damage I see revolves around stereo work. Does it even work? Your call, but when I got my 4R the first thing i did was rip out all the added on wiring from the previous owner and started repairing damage to the factory loom. I solder and shrink tube wiring, but those new connectors (Solder Seal) where you can melt the solder with a heat gun are a decent solution, too. I try and avoid crimp butt connectors partly because I think they can put stress on the wiring, but also because they're so much thicker than the wire being repaired. The worst are those quick splices, avoid those. In fact, if you have any lying around the garage throw them away so you never consider them for anything.
It gets pretty easy to spot non-Toyota wiring after awhile. If the wire is a solid color. no stripes or other markings, that becomes suspect. If it's not wrapped and in a loom, just a single wire running by itself, well, Toyota never does that. Ever. If the printed words on the wire are anything other than Japanese it's not original.

Here's a connector diagram from the EWD manual for 1987. Sorry, it's a bit cut-off, but it's rather large for my scanner bed. There's tons more info in the EWD manual, but this should get you started.

 

"A" would be the switch for the top. there was one bolt for holding down the top that was slightly longer than the rest. It would hit the switch and allow the rear window to work. That's probably why you needed to run a wire to the rear window. If you installed that cut-off switch, and put the right bolt in the hole to secure the top, it should start working properly.
eBay cover top switch
"B" is the connector that plugs into the rear window washer pump. A bag hung there off hooks, and the motor went into the side of the bag.
"C" should be the connection to the wiper motor in the top.
If you don't have a rear wiper then B&C are moot

All the red arrows are pointing to stuff that I'd remove. But your call.

 

Thanks I have a copy of that EWD but the diagrams are not readable it was a bad scanned copy I found on the internet. If you have the other pages of the routing diagrams that would help out a lot. It’s a big mess right now

 

I’m at a bit of a loss in this image
”A” might be for power mirror control switch, but can’t see enough to say for sure.
”B” I don’t recognize at all, and it definitely has aftermarket wiring taped to it(the black wires) so the whole thing might be aftermarket
”D” should, I think, plug into the fuse block at the left kick panel. What’s plugged into the fuse block right now?

 

The one labeled ? Is the one that runs from the back to the front and I can’t find anything to plug into it to get power to my tail lights.

 

 

 

I've been comparing my 1987 harness to the EWD manual, especially the left and right kick panels, and they match exactly. Yours doesn't.
I can't explain the differences yet. Granted, your was an ATM converted to MTM.
Can you pull the part number off the ECU at the right kick panel? It should be 89661-xxxxx

 

Ok, this is going to get a bit confusing I'm afraid, so feel free to ask clarifying questions.
right now I'm only dealing with the wiring at the driver's kick panel.
we'll start with an image showing the wiring harnesses running from the front to the back

The red arrow is the ? connector
The orange arrow is for seat belt warning
Green arrow is the connectors for the center rocker switches(rear window, wiper, window lock)
Light Blue arrow is connector for back window relay
Dark blue arrow is for the top control switch that keeps back window from raising when top is off.
Purple connectors are rear speakers
The pink circle is the ones I already mentioned (rear washer, left tail light assy, and rear wiper)

But the important one in the connector I labelled with ?
Here's that image


That harness starts at the left kick panel fuse block
it then travels under the sill plate, then goes into the 1/4 panel area just past the drivers seatbelt. It stays in that cavity the whole way back at that point, with all the different relays and switches getting plugged in along the way.
Connectors C.,D, E, and F make no sense. I have no idea what that harness does or where it goes right now. it just doesn't go there.
look at the harness I high lighted in yellow. It's pretty straight-forward. and I bet if you follow the loom with the connector ? all the way back it'll hit all those spots i marked with arrows.
if you start removing the harness with C,D,E,F i'm curious where it ends up.

If you look at the wiring diagram you'll see i marked the harness on the passenger side in green. It goes to the right tail light. This explains why right tail light works, but left doesn't. Different circuit.

But the next mystery is plugging the ? connector into something. Mine plugs into a male connector coming off the fuseblock. Or I should at least say it disappears under the fuse block.
Here's a good image of a 1987 4Runner kick panel fuse block.

Do you have that circuit breaker on the far right? In your photo the carpet is just blocking enough that i can't tell.

This is what the ? connector looks like in mine. That entire mass of wiring goes up and under my fuse block. Now go look at your image of the back side of your fuse block. that's why I'm asking about the circuit breaker

 

Ok so I found a 87 4Runner at the junk yard and the guy wanted $350 for the whole wiring harness but I just took the fuse box and the matching connector that goes to the ? Connector. But your right those wires just ran way up under the dash into the main harness. Here is pics of what I bought. These cost me $75 which I thought was still high

 

Now I don’t know how any of this that I bought is going to help me

 

There is no numbers on this ECU either

 

Ok, but did your fuse block have those circuit breakers on the side? Not the one you bought, i can see those. I mean the one that was already installed.

Well, it certainly would have been helpful if they had sold the connector still attached to the fuse block. but it can be repaired.

Too bad the part number is missing on the ecu. The fact that "TOYOTA" has been etched into does raise more red flags. Nobody does that to their own ecu. That's something a seller does(though not a very astute one)

I have a feeling that the prior owner changed a lot more than the trans.

 

No my fuse box that is currently in the 4Runner does not have those on it