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Old 06-14-2009, 08:39 AM
wedged wedged is offline
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there are several programable outputs that you could use to control relays. they could be used to control fans, if you wanted. Eventually I am going to use 2 of them to control converter lock up and overdrive engagement.
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Old 06-14-2009, 09:29 AM
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GregWeld GregWeld is offline
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Quote:
Originally Posted by wedged View Post
there are several programable outputs that you could use to control relays. they could be used to control fans, if you wanted. Eventually I am going to use 2 of them to control converter lock up and overdrive engagement.
I actually FOUND - their instructions actually kinda suck - that B3 in the 25 pin (grey) ECU connector is a controllable fan output (goes to NEGATIVE side of the relay #86). There is software parameters for setting this pin out....

I also am using the A/C "enable" function - which goes to the NEGATIVE leg of a Tri-nary switch in the A/C line. There is a wire in the harness labeled as such.

FYI - there is already a Torque Converter Control (TCC) output with wire provided in the main harness.

Now here's the giggle juice for you.... Fast does not provide additional pins (spares) in order to access these additional functions in the ECU harness. A trip to the automotive store to search for some provided no relief. BUT! There are a couple of spare outputs with a length of wire that if one could get the pin out of the harness - he could move it to where needed. I have a full set of cute little tools for removing such pins from various connectors.... and after 30 minutes or so... finally gave up on every tool I had to poke and prod the damn pin loose (they're a push in and lock type so you have to be able to get to the release).... Stick with me here....

So as I'm examining the dang connector -- and trying to discover how to correctly unseat the pin -- I noticed that the connector has a WHITE stripe running through it - which is obviously a different "piece" from the grey body (of the connector) that it's in... and it appeared to have a slot (damn small) which a guy could insert a small flat blade screw driver (or?) and pry the WHITE strip. I ever so gently tried this and to my delight - it loosened about a 1/16th of an inch away from the connector (I had to pop it up from both sides) - IT IS A LOCK THAT HOLDS THE PINS IN THE CONNECTOR - once this was 'popped up' - the pin and it's wire came right out... and I was able then, to do the same thing to the connector I wanted to use (stole the pin with it's wire length from connector A and put it in connector B at B3) and bada bing, bada boom, I was done!

So -- when you start working on your setup -- remember this little 'tip' should you need to do the same thing.
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Old 06-14-2009, 10:35 PM
wedged wedged is offline
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My car...er truck... has been running with FAST EFI for about 3 years now. I bought the harness kit that was the universal type- only terminated at the ECU end. I removed all of the wiring I was not using to neaten things up a bit. The connectors were no mystery to me, but I guess you could say I cheated a bit since I've been fixing cars for over 20 years. The wiring job was fun in a slightly sadistic way since I was combining the stock harness of a 94 Dodge Dakota with the FAST harness so that all of the stock neccesities would work.

edit: almost forgot- if you need more pins, sockets or the connector bodies, try Digikey. I bought some various items from them for the project including the parts to create a 5v reference source so the speedometer would work.


Last edited by wedged; 06-14-2009 at 10:39 PM.
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Old 06-24-2009, 05:11 PM
parsonsj parsonsj is offline
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I've got my V/A, FAST XFI, and DC Controls Fan controller all working now.

Here's a thread about the process:

http://www.pro-touring.com/forum/sho...highlight=FAST

One thing to know: the B11 input is backwards in the documentation. It's a 12V (not ground!) signal that tells the FAST ECU that the A/C is on.

jp
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