so I'm trying to plan my turbo build before i just start ripping my car apart and I'm gonna use the throttle body from the lsj. Anyone know how to make my 6 pin harness go onto the 8 pin connector on the new throttle body?

 

Wiring up the LSJ Throttle Body:



The following wires need to be swapped:
Yellow <--> Brown
Tan <--> Dark Grey
Blue w/ Black Stripe <--> Tan w/ White Stripe

The green and purple wires remain untouched.
There are two tan wires, however if you look closely one has a white stripe its pretty difficult to see.

ALL QUOTED FROM: BECK

 

does the 2.2 have the same Tb as the 2.4? and the same pigtail?

 

Different TB 2.2 pigtail the same. i have a 2.2 with a 2.4 TB the Pigtail was plug and play.

 

good deal, then that post from beck is all you need!

 

07 cobalts use a 6 pin harness, Not 8 pin. Thats what hes asking. Ive been tryin to figure this out for a while. Can anybody figure this one out?

 

hmmm..... well i didn't even realize that, good call.

 

they use both. Mine (an '06) has an 8 pin harness, whereas interviewatruins (an '07) has a 6 pin harness. We think '05-'06 cars use the 8 pin and the '07+ cars use the 6 pin, since they also use a different ECM

Also, if you have an 8 pin harness, beck's wiring diagram wont help, because while the 2.2 and 2.4 TB are interchangeable, they have different color wires, so you wont know which to swap. In my supercharger how-to, I list the wires that need to be swapped to make an LSJ TB connect to a L61 TB by color, and have diagrams showing which wires as well

To the best of my knowledge, no one has swapped a 6 pin TB with an 8 pin. I have the wiring diagram for both 8 pins listed in the how-to. If you can get the one for the 6 pin (Vince at Trifecta has them), then im sure you can figure it out

 

ok thanks for the input guys. I'm sure I'll figure it out eventually.

 

figure it out soon, so we can all benefit from this, lol.

 

Ok guys, here's what I've figured out thanks to some info from another member. I haven't done it on the car yet but I'm gonna try it soon. It seems like they used the same color wires and everything.

 

looking at my diagrams, that looks correct. Solder connections B and G together, and solder connections C and H together, and you are left with 6 wires to connect to your current 6 pin harness. You will need to buy an 8 pin wiring pigtail for the LSJ TB though.
Here's my diagram

 

ya I found a guy on craigslist thats selling his whole engine wiring harness

 

sub'd. im having the same issue so now i have a $50 paperweight.

 

Well hopefully not for long....next weekend myself and yzrider are gonna try to figure this out for sure....

 

I have an 07 cobalt with the 8 pin tb harness. I'm going with a ls4 throttle body that has 6 pins. Would taking 2 pins out allows and connecting those 2 sets of wires work? Will it be able to plug right up without any other modification?

Edit: Nevermind, I just checked my ls4 tb and it has 8 pins

 

i didnt know they made LS4 TB's with 6 pins...

 

Yeah, my bad. I double checked and realized that there was 8 and not 6.

 

all good. actually, if they had 6 pin TB's that would give something for the 6 pin cobalts to upgrade to..lol

 

I have an LSJ harness for sale as well.

 

sub'd

 

All This Trouble But Any Gains In Perf. I Heard No From Crate Engine If There Was They Said They Would Have It As An Add On From The Intake Mani. Unless Of Coarse U Going Forced Induction

 

this is more for the people doing M62 swaps

 

Dam scotty I didnt realize you were this close to going turbo.badass man let me know when its goin down and ill lend a hand.

 

it's a work in progress. I'm slowly gathering pieces until I'm sure I have every angle of this thing planned out. Still need to figure out which exhaust manifold I'm gonna use though