DRFT103

iTrader: (3)

I've seached here and supra forums with no luck...

I'm putting in precision 780cc's and trying to find info on how to wire in my OEM resistor box..

any help would be appreciated.

TURBO819

iTrader: (5)

The First Diagram is for the Supra Twin Turbo Resistor

good2go

iTrader: (6)

So for complete clarity, is your last picture an example of a mistake or the correct way to do it (it has W/R going to B and W going to R) ????

If this is an example of what not to do, I think it should have a big red X or a circle with a slash through it

DRFT103

iTrader: (3)

I have the mk4 resistor... looking at the top picture.. i still have NO idea of what i'm supposed to do.

I'm guessing i cut the original power wires and just bypass them, tie in where i cut into the resistors? and then tap into a power wire? leaving my signal wires alone?

if that's correct....

Any idea on the color of the wire i should tap into for the power?

DRFT103

iTrader: (3)

also.... which wire is the singal, and which is the power? theres a wire that's the same on all, its the one on the left of the clips, its black with a white stripe, and the ones on the left are all differant colors. anyone?

meangreen1

iTrader: (13)

Looking for more information on this please

soarer13oy

iTrader: (13)

The 12v according to the supra wiring diagram comes from ecu igsw pin so you can basically tap that wire. Im planning to wire mines inside of the car pretty close to the ecu, that way i can hide the resistor. The diagram on the previous post is pretty much straight forward.

meangreen1

iTrader: (13)

When are you planning on doint this? Also what box are you using?

soarer13oy

iTrader: (13)

Mkiv tt box doing it as we speak il take pics

meangreen1

iTrader: (13)

Thank you sir, you will save me 150 in labor

soarer13oy

iTrader: (13)

ok here it goes

I didnt get the male connector for the resistor plug so i just used wires, but it would be easier to do this with the male connector. For this picture the plug is labeled by pin:

1 5
2 6
3 7
4 8

pin 1 is +B, pin 2 is injector #1, pin 3 is #2, pin 4 is #3, pin 5 is empty/unused, pin 6 is #6, pin 7 is #5, pin 8 is #4.


For the B+ signal i traced it to the igsw ecu pin which was pin #1 of the smaller ecu connector. If you look in the back of the connector it will label the pins 1-10


The injector pins are on the on the bigger ecu plug. The pins are 15-20.

Pins Injector#
20 ---------------1
19----------------2
18-----------------3
17 --------------- 4
16------------------5
15------------------6
in this picture the it starts from pin 15 down to 20.


I then cut the wires and connected the wires from the resistor to the ecu pins. I just used electrical for now, tomorrow i will solder, heat shrink, and clean it all up. I decided to wire the resistor near the ecu so that i wouldnt have the resistor sitting in the engine bay.

soarer13oy

iTrader: (13)

Np, use that $150 to get more parts for your car. Let me know if you have any questions.

meangreen1

iTrader: (13)

What ECU are you running? I have an AEm so I need to look at the pins

soarer13oy

iTrader: (13)

Aem still requires a resistor? Anyways im running an aristo ecu

chingpo05

iTrader: (2)

you should be able to use single resistors from radio shack also. 10ohm 12volt ones if i reme correctly