I wanna order a Jspec engine from fc3s.org, but according to their site, they don't include wiring harnesses? Anyone know where I can get a new/newer one (mines nasty and I wanna replace it) besides spending like $600 from mazdatrix?

 

These guys usually have most harnesses pretty cheap (well comparied to a dealer):

http://www.mazdasurplus.com/

 

Aye, already checked them. I sent the guy an email asking, but maybe you can respond since your here.

On the harnesses it says "S/N up to" or "S/N above" What Serial number are they talking about? Is that the engine S/N, ECU, car, etc...

 

last digits of the VIN number.

 

So should I still get it even if I'm getting a Jspec? Will it still match up?

Btw, thanks a ton for your help mark!

 

well if yours is bad then its either replace it with a new US spec one, or splice in the Jspec one to your old harness.

 

The difference is for low/high impedance injectors. Your 89 car will be high impedance.

 

Ok.
So I guess having a new one of the same design in there would be the same as having my stock one and hooking it up to the Jspec, which is what I'm told I would need to do. So all should go well...

I hope.