I recently just bought NEVERSTOP's monster 3SGTE. I need to know what all needs to be done to the Wiring harness for it to work in my ST. It is my understanding that all of the wires need to be extended by 33 inches or so... But is that all that needs to be done? Also, I think that some of the plugs are different in my 7AFE ECU and may need to be changed.
Can anyone get me some type of wiring schematics and tell me what all needs to be done to get the ECU to work in my swap?
Thanks alot!
Yota
-Yota+Oct 29, 2004 - 10:22 PM
send me the links too thanks lance
do you have an uncut ST185 harness with the engine?
15PSI - 30MPG - Megasquirt Tuned
-Yota+Oct 31, 2004 - 2:02 AM
"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...
Meaning what...? Extending each wire and every wire?
your in for ALOT of work man,...if the harness is cut, your gonna have to rewire it.. >

> good luck, man
Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered
did any one ever get close to making that how-to for the wire swap??
-Digndoug+Oct 31, 2004 - 10:08 PM
Rewire..meaning what? Is it just a matter of extending the wires, and finding out where they plug into?
If thats the case, there should be wiring schematics from Toyota that I could get. Then it would only mean me figuring out what wire goes where, extending it to plugging it in. Right?
you fail to see that you'll have to seperate each individual wire and find out where it's coming from, extend enough to reach the ecu, and then plug into the right plug in the ecu. That may not sound like much but that is ALOT of work.
I have a friend who swapped an sr20 into his 240sx. He just showed me what he had to do with his wiring harness.
He got these wiring schematics that told him what each wire was. He then extended it to whatever length he needed and plugged it into the correct corresponding plug.
Even with a how-to with detailed pictures and diagrams... building a wire harness is still gonna be beyond most who don't have a lot of experience.
Toyota's aren't as easy as Nissans either... but as far as building the harness goes... Doge pretty much explains the basic process. it's all about having diagrams and knowing what wires do what and what is needed for the engine to work.
"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...
you have to rewire the harness to plug into your stock fuse box, or you can use dual fuse boxes like doge.
on the interrior, you have to rewire the 3rd ecu plug and 3 interrior plugs. then add in a fuel pump relay from your st185.
after that, you can extend the harness or cut a new hole in your firewall directly to the ecu.
15PSI - 30MPG - Megasquirt Tuned
and thats it?
What would I have to do if I was able to come across an uncut 185 harness?
Is there anywhere you can go to purchase one?
-Yota+Nov 1, 2004 - 1:41 PM
15PSI - 30MPG - Megasquirt Tuned
I already have those parts.