3.4 Swaps The 3.4 V6 Toyota engine

conversion wiring harness

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Old May 29, 2008 | 06:35 PM
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76ANTHONY's Avatar
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conversion wiring harness

does anyone sell a 3.4 conversion wiring harness for a supercharged 3.4? my thought is, why not convert over to a 3.4 supercharged instead of a reg 3.4 from my 3.0.
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Old May 29, 2008 | 06:41 PM
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From: Woodinville, wa
yup they do
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Old May 29, 2008 | 06:44 PM
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From: Branford, CT.
http://www.offroadsolutions.com/prod...swap_harnesses
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Old May 29, 2008 | 08:58 PM
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thanks, thats what i was lookin for.....
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Old May 29, 2008 | 09:57 PM
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From: maryland
I am about to do that very swap and as far as I have found out if you have the donor vehicle ecu and wiring harness then you only need to splice a few wires for the dash components like the speedo, tach and idiot light or two.

I am going from a 1990 3.0 to a 2000 TRD 2ND GEN Supercharger(the black one) with the URD system and according to off road solutions I only need to do the dash to ecu set up because the rest is just a stock to new truck swap even with the upgraded URD stuff.

I almost forgot to tell you what I have seen here there are a few guy's that have done it themselfs by paying 10 dollars a day to get the wiring diagrams for both vehicles and finding the wires that need to be spliced together on a TOYOTA(I can't remember what it's called right now but I am sure someone will chime in with the name) site that will allow you access to what years you need for the wiring, thats how I plan to do it myself.

Last edited by olharleyman; May 29, 2008 at 10:03 PM.
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Old May 29, 2008 | 10:26 PM
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Originally Posted by olharleyman
I am about to do that very swap and as far as I have found out if you have the donor vehicle ecu and wiring harness then you only need to splice a few wires for the dash components like the speedo, tach and idiot light or two.

I am going from a 1990 3.0 to a 2000 TRD 2ND GEN Supercharger(the black one) with the URD system and according to off road solutions I only need to do the dash to ecu set up because the rest is just a stock to new truck swap even with the upgraded URD stuff.

I almost forgot to tell you what I have seen here there are a few guy's that have done it themselfs by paying 10 dollars a day to get the wiring diagrams for both vehicles and finding the wires that need to be spliced together on a TOYOTA(I can't remember what it's called right now but I am sure someone will chime in with the name) site that will allow you access to what years you need for the wiring, thats how I plan to do it myself.
i saw that also, its very interesting thats for sure, i need ta check cali laws for change over engines, on here theres about 25 different answers, so i'll go ask my smog guy and be totally sure about it...
thanks for the info
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Old May 30, 2008 | 02:58 AM
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From: Branford, CT.
techinfo.toyota.com:
https://techinfo.toyota.com/techInfo...3/register.asp

I would say look up both diagrams for each truck, download and save them to your computer. If you need to print them out you have them.
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Old May 30, 2008 | 03:52 PM
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From: tucson,az
Originally Posted by 89dlx
techinfo.toyota.com:
https://techinfo.toyota.com/techInfo...3/register.asp

I would say look up both diagrams for each truck, download and save them to your computer. If you need to print them out you have them.
everything in my 4runner was setup like the wiring diagrams for that year, but the 2000 tacoma wiring harness had a 2001 tacoma connector for the dash plug. i ended up needing both years and having to follow the 2000 ewd for the wire colors, and the 2001 ewd for the pin #'s. i would suggest downloading the years before and after in addition to the year that you want, for both vehicles.

that said, the wiring wasn't really that hard for stock to stock. mine started first try and i've got about 250 miles with no troubles whatsoever.
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