Today i was hks computer around trying to clean thing up and i saw the wire just sitting it looks like it may be a ground. As far as i can tell i goes to this small box that says control unit and it splits off and goes in to the harness. I was wondering where dose it go so i can put it back.

Here are some pics i can take more if needed

 

It's the old fan harness ground pre Mazda fan control recall.

 

so dose it need to be hooked up cause it goes to three diff places

 

No that is the old ground wire for the old fan set up. The new setup utilizes a new control box. That wire is now just an empty wire hanging there with no purpose.

 

Ok thanks i have one more ? Is there any one out there using the hks pfc i need some insight about it

 

old post -
but The HKS PFC F CON was and is still is a great computer given the use, mods of the car, and owners knowledge. I ran one of these on my 91 turbo for a long time with great results. I also had the GCC tied in with it.