So first off I would like to say i am new to the hole forum thing so I apologize in advance for any mistakes I make "stupid nubies hu"



That said I have recently bought a 20b engine from a jc Cosmo and am transplanting it into a miata ya that right I said a miata

I've bean told there is something not quite right with me but it's bean done before but I now it will fit I WILL MAKE IT FIT.



I am at the point where I need some Wiring diagrams and pinouts for the 20d ecu i realize they are only in Japanese but I have a friend that can translate for me. if anybody has any or if they can point me in the right direction i would much appreciate it and well you would just rule!!

 

There are no available engine manuals outside of the Japanese dealer ranks. Plenty of people all over the world have tried to get them to no avail. You're on your own as we pretty much all are with these engines.

 

Thanks anyway

I contacted a jdm inporter in my town who says he can get me a factory mazda shop manual form japan and he is willing to translate any parts i need "he is japanese" So if he can find me one i will let you guys know

 

You can get the manuals, I have one in pdf format, but they never put the engine section into the manual, just all the rest of the JC Cosmo car items. This is the problem we all have.

 

Here you go a couple of wiring diagrams for the 20b ecu qualities not the best but should help. If you could get them translated it'd be nice if you could post the translated version for all.

 

Here you go a couple of wiring diagrams for the 20b ecu qualities not the best but should help. If you could get them translated it'd be nice if you could post the translated version for all.

 

Here you go a couple of wiring diagrams for the 20b ecu qualities not the best but should help. If you could get them translated it'd be nice if you could post the translated version for all.





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I will see what I can do it will take a couple of days but if he can translate them then i will post it back up for all he said he would so we will see

 

Do you have the missing 1 or 2

 

Im not trying to be an ***, but why would you want to know about wiring harness info??

First of all 20b cosmos were automatics?? Unless you want to make your converted Miata to also use auto tranny, I don't see the purpose of getting this info.



Most 20B's on the road today uses aftermarket standalone and that means you need to rewire the set up.. If you are worried about sensors... most of them are similar to FD sensors.. or you could figure them out fairly easily.