SOHC pinouts and wiring differences dohc vs. sohc

[ryan1]

does anyone have the pinouts to a sohc 90-94 pro?
also what are the differences in wiring harness between the dohc and sohc?
the ones i know off the top of my head are,
the VICS and the dizzy has a extra wire for the dohc.
thanks

[MD323]

thats it just those 2 pins the rest is the same, gimme till tonight and ill get you what pins need added

[MazdaNoob]

subbin need this info too

[therieldeal]

sohc 4wd != sohc fwd i'm pretty sure

[MD323]

sohc 4wd != sohc fwd i'm pretty sure

correct

[jumpncrash]

you have to run 2 extra wires.

looking at the back of the 26 pin plug, with the clip facing up, from left to right on the top row,
the 4th wire is vics, and the tenth is the distributor wire.

there will be empty sockets in the plug where you can put the wires

Nick

[ryan1]

what is the extra wire for the dizzy for anyway? would it run without it or cause problems?
thanks

[MD323]

what is the extra wire for the dizzy for anyway? would it run without it or cause problems?
thanks

it will throw a code, its the "home" signal for the ecu and without it the engine runs in limp mode. I have a picture around here somewhere with the pins highlighted but i cant find it

[ryan1]

it will throw a code, its the "home" signal for the ecu and without it the engine runs in limp mode. I have a picture around here somewhere with the pins highlighted but i cant find it

did you find thous pics? , or does someone else have pics, or pics of the pinouts?

also does the sohc pro fuel rail work on the dohc? just by looking at them they look diffrent but im not sure (im more familiar with the escort gt's and the ford and mazda rails are different).

[jumpncrash]

no the SOHC fuel rail doesn't work on the DOHC

As for pics you shouldn't really need them, read what I wrote up top and you should be fine. If I get a sec I'll see about taking a pic though.

Nick

[ryan1]

no the SOHC fuel rail doesn't work on the DOHC

As for pics you shouldn't really need them, read what I wrote up top and you should be fine. If I get a sec I'll see about taking a pic though.

Nick

on the dizzy plug did you just cut the hole plug off and splice for a dohc plug, or just somehow remove the plug for the 4 wire on the sohc plug, if you moded the sohc plug and tips on that?

[almighty4wd]

on the dizzy plug did you just cut the hole plug off and splice for a dohc plug, or just somehow remove the plug for the 4 wire on the sohc plug, if you moded the sohc plug and tips on that?

I repinned the sohc dizzy plug. It was a pain, and somewhere I have pics of the mess I made, but I did it.

[jumpncrash]

Yeah I jsut pulled the rubber plug out of teh connector and replaced it with a wire/pin from another disty connector, went pretty smoothly.

Nick

[nerd racing]

where do you get the other wire for the VICS from? Is it a ground?

[almighty4wd]

Yeah. just tap into the ground for the solenoid right next to it.