need 3.4 swap wiring help
May 29, 2012 | 07:15 PM
#1
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From: johnson vermont
need 3.4 swap wiring help
Hey guys I got everything in the truck the engine is sitting nice all bolted to the trany and new clutch installed. Well my question is what am I splicing the two plug in (one is grey one is white) that are kind of behind where the ecu bolts in? This is on a 93 3.0 5speed with a 97 3.4 5speed I thought I could do it my self but it just hair pulling
May 30, 2012 | 08:28 AM
#2
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From: Auburn/Sacramento, CA
http://www.offroadsolutions.com/old/...swap_harnesses
http://www.toyonlyswaps.com/Page_4.html
or start reading and see what others have done.
http://www.toyonlyswaps.com/Page_4.html
or start reading and see what others have done.
May 30, 2012 | 08:38 AM
#3
Hey guys I got everything in the truck the engine is sitting nice all bolted to the trany and new clutch installed. Well my question is what am I splicing the two plug in (one is grey one is white) that are kind of behind where the ecu bolts in? This is on a 93 3.0 5speed with a 97 3.4 5speed I thought I could do it my self but it just hair pulling
Pro tip: Get a $15 48 hour membership to TIS website and download manuals for your doner and recipient, and learn to read an electric wiring diagram (EWD).
Best of luck on your swap. Post up some pictures sometime!
May 30, 2012 | 10:07 AM
#5
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From: johnson vermont
Iv read for months and its not the wiring thats scares me (im a journey man) but I just need to know what plugs I am spliceing it seems like I'm taking the t100 dash harness plug and firing it to my pikc up. and also the grey plug I just want to if this is correct and I don't know how to post pictures on a Android phone haha
May 30, 2012 | 10:36 AM
#6
This is what info I used to get it done.
1. Wiring diagram from the truck that the 3.4 engine came from (Auto).
2. Wiring diagram from the truck that the 3.4 ECU manual came from.
3. Wiring diagram from the truck I put the engine into. (95 4runner)
The rest is a lot of matching, eat and sleep wiring thoughts and dreams.
Allow plenty of time to do wiring. Someday, I only get one connection done. There's plenty of "how to" here. You just have to pick and choose which info you can use.
This site helps me to realize that I have the one ton ECU...
http://wholesale.toyotapartsandservi..._Computers.pdf
Bottom line, get info then ask about how to put the info together.
1. Wiring diagram from the truck that the 3.4 engine came from (Auto).
2. Wiring diagram from the truck that the 3.4 ECU manual came from.
3. Wiring diagram from the truck I put the engine into. (95 4runner)
The rest is a lot of matching, eat and sleep wiring thoughts and dreams.
Allow plenty of time to do wiring. Someday, I only get one connection done. There's plenty of "how to" here. You just have to pick and choose which info you can use.
This site helps me to realize that I have the one ton ECU...
http://wholesale.toyotapartsandservi..._Computers.pdf
Bottom line, get info then ask about how to put the info together.
Last edited by anthony1; May 30, 2012 at 10:37 AM.
May 30, 2012 | 11:27 AM
#7
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Iv read for months and its not the wiring thats scares me (im a journey man) but I just need to know what plugs I am spliceing it seems like I'm taking the t100 dash harness plug and firing it to my pikc up. and also the grey plug I just want to if this is correct and I don't know how to post pictures on a Android phone haha
I ended up making an adapter that took 3 plugs from the donor and adapted it to 2 plugs on the recipient.
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May 30, 2012 | 11:54 AM
#9
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From: johnson vermont
Ok thanks guys kind of claierifies things. I'm just doing other things to releave some stress on the wires Haha like doing the exhuast and doing the intake and such kind of sucks because I just got them finished
May 30, 2012 | 02:13 PM
#11
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From: Auburn/Sacramento, CA
As a word of caution, be sure to check the two EWDs to make sure that those connectors are pin-compatible. That is, make sure the function of each wire on the two sides of the connector are the same, or at least similar. The last thing you'll want to do is blindly plug the two together and hope it works, for all you know Toyota may have swapped a +12V and GND wire between the two applications and now you've just shorted +12V to GND and blown a fuse somewhere (if you're lucky).
Don't just assume that because they connect, that they are wired the same.
And good luck with the wiring, it really isn't too bad once you get into it, the hardest part is deciphering the EWDs.
May 30, 2012 | 03:36 PM
#14
May 30, 2012 | 03:54 PM
#15
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From: Auburn/Sacramento, CA
I just posted this yesterday in another thread...
https://www.yotatech.com/forums/f160...estion-252682/ Starting at post #22.
I can't help you with any useful information about the chilton's guides, but my gut feeling is that they wouldn't be able to provide the detailed info that you would need.
Correct, don't assume that someone else's pin numbers are the same as yours...unless you find someone who has the EXACT same donor motor as you, year, model, body style (single vs ext cab), 4x4 vs 4x2, and M/T vs A/T.
My advice, spend the $15 for a 48 hour subscription to TIS (https://techinfo.toyota.com) and then spend a couple hours for a couple nights downloading everything you can from your donor and your recipient truck: EWD (Electronic Wiring Diagram), Repair Manual, and any of the extras they offer that could be fun. Other's have suggested downloading the adjacent years also, which could be useful but I was lucky and was able to do everything with just the two sets.
Watch the tutorial videos before you sign up, the site can be a bit confusing to navigate, but the tutorials really did help.
With all the money you have spent (or will spend) on this swap, that $15 will be one of the cheapest things you can buy from Toyota, yet will be the most useful. And as been said before, you can't study those wiring diagrams enough.
Correct, don't assume that someone else's pin numbers are the same as yours...unless you find someone who has the EXACT same donor motor as you, year, model, body style (single vs ext cab), 4x4 vs 4x2, and M/T vs A/T.
My advice, spend the $15 for a 48 hour subscription to TIS (https://techinfo.toyota.com) and then spend a couple hours for a couple nights downloading everything you can from your donor and your recipient truck: EWD (Electronic Wiring Diagram), Repair Manual, and any of the extras they offer that could be fun. Other's have suggested downloading the adjacent years also, which could be useful but I was lucky and was able to do everything with just the two sets.
Watch the tutorial videos before you sign up, the site can be a bit confusing to navigate, but the tutorials really did help.
With all the money you have spent (or will spend) on this swap, that $15 will be one of the cheapest things you can buy from Toyota, yet will be the most useful. And as been said before, you can't study those wiring diagrams enough.
May 31, 2012 | 01:48 PM
#17
I take it that you've found the info for 96 and up but the 94, there's no info on the pickup? What about 4runner? I believe, they are the same as the pickup...but I'm not sure.
May 31, 2012 | 05:54 PM
#18
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From: johnson vermont
There's nothing under "pickup" so I went under truck bitstill can not get the body harness and I checked for 91 up to 95 ill Check for runners in a bit but this is the only thing holding me upp
May 31, 2012 | 06:35 PM
#19
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From: Auburn/Sacramento, CA
I don't remember exactly where TIS has it, but when I downloaded all my manuals/EWDs I tried to maintain the same directory structure they had.
Any way, the diagrams of the body side connectors on the 3.0L engine harness are listed:
...\Power_Source_Network\Electrical_Wiring_Routing \connecto.pdf
They were called IH1 and IH2 for my '91 4Runner (they may or may not be called the same thing on the pickups).
Any way, the diagrams of the body side connectors on the 3.0L engine harness are listed:
...\Power_Source_Network\Electrical_Wiring_Routing \connecto.pdf
They were called IH1 and IH2 for my '91 4Runner (they may or may not be called the same thing on the pickups).
