wiring Help anyone swap a mr2 turbo 2nd gen 3sgte to a 3rd gen 3sgte? Options

[mk7celica]

Hello to all, I am in need of some wiring help. As some may know I just got a 1991 mr2 turbo and am in the middle of figuring out how to swap a 3rd gen 3sgte into a 1991 turbo. I have been though it on a celica and know alot. But its a bit different on a mr2. No need to extend the harness thats good. The main part is repinning the body harness. Or i have read to get a 1993 or newr body harness. anyone have experience on swapping a 2nd gen to a 3rd gen into a mr2? I have been on this site for a while so I thought I would ask.

[Smaay]

im sure this has been covered in MR2oc.com

[mk7celica]

I have found info but its confusing. Kinda was hoping I could get the run down on what wire to switch and repin.

[95CelicaST]

Manny (presure2) literally just covered this in his 5s to 3rd Gen swap.

and now, the basics of the wiring that is required.

first is the interior plugs.

this black wire on the white plug:





is for the clutch start switch. we need to put it to pin 17 on this grey plug:



you can see the #'s for the pins on the back of the plug (sorry for the upsidedown pic, i forgot to edit it)



so i added a pin from one of the 5s harness plugs:



and soldered the connection:



and thats it on the interior.

next up is the EA1 plug in the engine bay.

this pic is the bodyharness side of the gt-4 EA1. the 3 wires on each end are extra wires that need to be used with the swap, along with a couple on the top.

with my 94, the connector for my EA1 bodyharness side was blocked off solid where those wires go, which was diffrent from jims swap. jims 95 had little rubber plugs in them that were able to easily be removed to add pins if needed.

so, we just removed the wires from the 5s bodyharness EA1, and transfered those over to the gt-4 one.
a pic pointing to the 3 wires from each side:





in this pic, the gt-4 plug is on top, the 5s one on the bottom.
basicly, it was as easy as removing the pins one at a time from the 5s one, and installing it into the 3s one.
easy peasy.


and a pic of the pin tool i used to remove the pins in action.



a medium saftey pin also works well.

once thats done, there are 3 wires left over, 2 need power sources, and a white with black stripe gets ground.
thats all there is to it!
lots more pics and vids later. unfortunately, its supossed to rain all day, so the vids will prolly be on the lame side for now..lol

[presure2]

thats really not the same at all tho.
its like doing a 205 swap into a 185.

[95CelicaST]

Ah, I didn't see that the mr2 is already Turbo.

Hmmm well then nevermind