gen1 wiring conundrum

Hello all!

I am currently well beyond my knowledge-base here and requesting help, advice, direction, resources or best yet, a color-by-numbers picture book for my utter lack of diagram literacy:

I have swapped a 2000 3RZ (CA emission std/plug-paks) into an automatic 1996 Tacoma (RZN171L 4WD manual hubs);

Despite expected compromise to 4WD features, I've installed an interim engine wire harness (82121-3G400 ..2RZ 2WD), but word is that it should get me down the highway (unfortunately the swap-in's harness was chopped during extract--wasn't me);

ECM (89661-04631) to match "new" CA 2.7 should be here today.

Now it seems to me that if I was fluent in wiring diagram and had in-full all three schematics ('96 2.7 + '00 2.7 + '00 2.4 2wd), I could readily understand which wires do what and where pins should be rearranged.

I would be happy to pay for consultation services and/or pin order drawings/description of the connector party behind the glove box.

Additionally, although three-outa-four engine harness slots should be plug and play, I sense potential trouble with the single (grey) stock '96-to-"new" ECM connection.

I cannot give up, take a long break, or pull it all out and start over with a standard chassis-engine-wire harness-computer configuration.

And to answer the inevitable 'why would you even do this?'...Cuz I been bein cheap, short on time and I just didn't know as much about Tacomas as I thought I did.

Any input, time and consideration for this matter is welcome...I'm all ears and would be happy to discuss direct.

Thanks much.

 

Welcome to the forum!

Always good to know where you live Help could be close at hand.

All is not lost !!

Is time a factor ? Wanting to get finished I can under stand

Hunt for hard copies of the 2000 EWD and the 97 EWD you get real lucky and some one can post the years you need.

The 2000 Tacoma EWD has all the American Engine options.

Buy Time on All Data or Toyota`s Technical Information Services.

I have no idea of current prices it has been awhile for me.

Best of Luck

 

Hey thanks for the thoughts and feedback.

Definitely I need to get hard copies of those documents! I found a 2001 online and a shop here was cool enough to print out a about dozen pages for each model variance I'm working with...Kind of small and incomplete pictures for me though.

Additional challenges have recently become fully apparent and are forcing me to change tack:

1. The grey block is a confirmed problem. ECM arrived late today.

2. A 2000 2RZ 2wd wiring harness is too different than a 4wd 3RZ in the '96 transmission neighborhood.

I think reality is saying I just have to take the loss in this round and come back to the project with better planning and more time.

 

Thinking things through doing lots of research all the schematics you need in hand .

You made a straight forward job even more difficult.

i would go with a month of TIS if need be buy a printer down load and print everything!

decide what year and drive train you want then make it happen!!

I have a 86 4x4 pick up that now is a 98 4Runner! Looking at the engine.

Good luck!