mechaniman

Ok, I'm at the wiring stage of this swap.
I have a subscription to Toyotas TIS site.
89 4runner with m/t
96 3.4 with supercharger, auto ecm and wiring harness

It doesn't help that the TIS site doesn't have the diagram for my 89 4runner,so I've been using the 1990 info (hope it doesn't bite me in the ass)
and I cant find the top plugs in any diagram or pin out sheet.
they are the plugs that go into my dash wiring harness

also have not been able to identify the dash wiring plugs on my 3.4 harness.

could you guys identify these plugs for me. thanks y'all

theMonch

The recipient is a 89 3VZE R150 4Runner?

and the donor is a '96 what exactly, 4Runner, T-100, Tacoma, etc.?

Also which picture is from what vehicle harness?

mechaniman

the recipient is a 1989 4runner with 3.0 and r150
donor 1996 4runner 3.4 with auto ecu and harness

the first set of plugs are from the 3.0 engine harness to the dash harness
the second set is from the 3.4 engine harness to dash harness

mechaniman

looking at individual wire and they all have 1988 printed on them, should I be looking for a 1988 diagram

skunkwhat

the 89 plugs dont look like what my 92 plugs look like, being that 89 was the older body style may have something to do with it. I cant find my 97 4runner plug diagram, but i know they were "ll3", and "ll1"

The plugs on my 92 3.0 harness were "c1", and "c2", maybe you can check and see if that helps.

If you search for "connector joining wire harness and wire harness" as the pdf title it should bring it up.

theMonch

Well the 3.4 stuff in the second picture looks to be II1 and II3. These are the connectors from the 3.4 engine harness to the body harness.

The other two from the 3.0 I can't seem to identify myself either. (I am in the middle of creating a conversion wiring hiring for a '88 3.0 R150 to '97 3.4 R150 t-100) They obviously are the same two plugs that would be wired to the functions of the II1 and II3 from the engine harness, but as far as what their designation is, or finding definitive functions per wire, I am stumped.

TIS didn't have my '88 EWD either, but I do have the factory FSM for the '88, but the EWD's in there don't have the 3.0, just the 22RE. I have been looking at the '90 3.0 4runner diagrams as well as the '88 22RE diagrams to try and deduce what exactly everything is. If I have any revelations I'll let you know. I would appreciate it if you would do the same.

Here are a few diagrams that identify the 3.4 stuff.

theMonch

I have attached a picture of the same two plugs you have there from your '89, but what they look like in my '88. (both are yellow).

Since the 3.0 was a late entry for the '88 model year, everthing was different from the 89. Since the Toyota pickup truck started it's new model redesign in 89 the 4runner's got the newer style harness that had white and grey connectors (like yours) in '89. The '88 3.0 has many little differences from the 89-95 3.0. Most sensors, etc aren't the same due to this wiring harness style change.

My best guess for your 3.0 connectors is IH1 and IH2 (this is what they are referred to in the '90 4Runner EWD) Heres a diagram of those as well.

mechaniman

so the wiring diagrams for 1990 and 1989 are almost identical. I got a pin out in the connector joining wire harness and wire harness section in TIS.

thanks for clearing this stuff up for me folks. I just kept looking for those plugs in the engine wiring section and have been scratching my head for a while.

those 3.0 harness plugs are called lH1 and lH2

theMonch

I'm sure there are similarities, and that chances are that they are almost identical, but I wouldn't assume 100%. Toyota likes to move pin positions around from year to year from what I read, so just be carefull when identifying each wire.

mechaniman

alright, I have my 3.4 harness all mapped out, so far so good.

But...
on my 3.0 harness none of the wire colors are matching up, do I go by wire color or pin number.

dntsdad

I personally would go by function rather than pin or color if you are stuck.

Have you checked over at ttora for a FSM with wiring EWD's

skunkwhat

I agree function if you can, But i would go by the pinout over wire color if i had too. It might be a good idea to take the pin that the diagram states, and actually trace it out with a continuity tester, to see if it actually goes to where it says. This can be a pain in the ass, and might require a second person, however personally i would rather now its right when i make the connection.

mechaniman

I think I am going to hold off until I can examine a 1988 4runner diagram,and if the wire colors and pins dont match up with that diagram, then I'll have to ohm everything out. thanks you guys for all the input.

hamish_18

I am also having this issue. I am stumped as to what wire on the II3 plug goes to what wire on the IH2/IH1, and plug d of my 97 ecu. It is frustrating as this is the last thing I need to do.

Yota4x4sc

I was wondering if anyone is good on the tis Toyota site. Aka Techinfo.toyota. Anyway I can't seem to find the pinouts on the tis website for the body pluGS. I have a 1995 3.0 that I swapped a 1996 3.4 into there both 4runners and I can't seem to find anywhere the wire functions of the plugs that I need to make the swap work. I think the plugs are called ii1and ii3 on the 3.4. And ih1 and ih2 on the 3.0. Anyways any help would be greatly appreciated. I have been reading this form for about 2 months now and still can't seem to find exactly what I need. Thanks andrew

SacRunner

The EWDs will not explicitly tell you the pinnouts for all of the connectors (ie, there is no chart that lists the function of each pin in II3), rather, its up to you to figure out (reverse engineer) what each wire is, based on what's connected on either end of it or what's spliced into it. It is super tedious, time consuming, and annoying but oh so very rewarding in the end when you can look at the diagrams and everything makes sense.

If you haven't done so already, download (save a copy to your PC) of each and every PDF they offer for the 95 and 96 4Runners (really just the EWDs and FSMs); you will need to go through the wiring diagrams over and over and over before they start making sense. As a side note, when you download the EWD and FSM PDFs, it will make looking things up much easier if you save your copies in the same folder structure as TIS.

Just a heads up, while there is A LOT of info out there, no one is going to give you exactly what you're looking for, we've all been through it, its really not that bad (but it is why conversion harnesses are as expensive as they are).

Yota4x4sc

Thanks that's kinda what I was thinking. I had the subscription to tis and it just ran out. I didn't save really much at all from the site. And I dont even know if it actually saved. It sucks I was using my buddy's comp and I'm use to a Mac, his is a pc. I think all it saved the stupid adobe link to the page, lol I guess I'm just gonna have to pay again and sit down n try to search for each wire. But how do u search for the wires anyway. How do u know where or what they are in the first place? It's such a pain. I have been searching and reading about the subject daily for about 2 solid months. And it's not even my rig. It's my buddy's runner. If I do swap my rig I'll prolly just do a 5.3 Chevy. Anyways thanks for ur help Andrew.

eastcoast4runner

Rarely post on here but I'm at my wits end. Having trouble finding a dizzy for my V6 88 Pickup since it was an oddball year. Currently the truck hasn't ran for 4 months due to ignition problems. Pretty sure some things got fried, ended up replacing the ECM and the ignitor but it still won't run. Had a friend mention that I should make sure the dizzy is the correct part, turns out that may have been my problem the entire time. Curious how much you know about the specific differences between the 89 and 88 v6. With the luck I'm having finding the correct distributor pickup coil, im starting to think the ignitor may be different as well but as far as i know there is no way to check.

Any help would be appreciated!!!