My alternator isn't charging the battery at all. It's been rebuilt already so it should be fine. I have an s4 na shell with a s4 t2 motor swap with t2 harness, and I need to know which wires I have to splice into or whatever to make it work. Anyone know which wires they are and where they run into?

 

[QUOTE=FC Kal;11372654]Hey guys, i tried to figure it out for myself but had no such luck. My alternator isn't charging the battery at all. It's been rebuilt already so thats shouldn't be the problem. I have an s4 na shell with factory harness with a s4 t2 motor swap with t2 motor harness. I've concluded that my alternator wiring coming from the back plug isn't hooked up. I read on a few different threads that i need to run these wires directly into the car into these orange plugs(?) . Is this true? Any insight would be helpful. Thanks.

 

anyone?

 

You need to run a extra wire directly to the battery.If you would have kept the N/A harness it wouldn't need it,but you got the S4 TII harness on there now and it needs it.
..The problem is I am not sure Which terminal.(It may be the big one).It is early and I haven't had coffee!

 

There's a diagram in this thread a little ways down that details the difference between an S4 and an FD alternator. This may have some info your interested in.
https://www.rx7club.com/2nd-generati...all-s4-480242/

 

It's not the alternator swap wiring that is the issue.
It is the fact that he is using a TII harness in an N/A car to run a TII engine.
The N/A engine harness had the Alternator wiring on it.When he put the TII engine harness on he lost that.
He needs to reconfigure the alternator back into the charging system.

 

Yea, I was refering to this diagram:
Still not sure if there is any information there that would aid in getting the wiring harness back the way he needs it. I believe it's a diagram of the S4, S5 and S6 alternator wiring. Didn't know that the TII has different wiring.

 

THIS IS EXACTLY IT. The TII harness was already on the motor. Bought the shell and swapped everything over that i could. This was the last thing that i could not figure out.

 

S4 NA and TII alternator wiring is same, but different. An NA has the 2-wire plug on the emissions (EM) harness, but a TII has that same plug on the engine (E) harness. On an NA that is now using a TII EM harness, the plug no longer exists. The fix is to take the plug off of the original NA EM harness and run new wires to the EM to Front harness connector (or extract the plug and all wiring and connect the same). Check the FSM wiring diagrams to see which of the two plugs it is (FEM-01 or FEM-02). One of the wires will go to switched power via the front harness and the other will go to the warning lights.

 

and THAT /\/\ is why he is called the ROCKET!
..hit the Target with pinpoint accuracy!

 

I verified that i do have a T2 em harness but i still retain the stock na front harness. Is there any problem with that?

 

nope.

 

I used a low impedance TII harness in my S4 TurboVert swap. If retaining the stock S4 alternator, you add two wires to the TII ECU harness that 1) ultimately connects to the switch power from the ignition switch and 2) the idiot lights. The added two wires connect under the passenger side kick panel where the ECU is.

If you're upgrading to either an S5 of S6 alternator, then you only run one wire to the ECU area for the idiot lights, the other goes directly to the positive side of the battery.

Be careful not to get the wire connections switched or you'll blow the alterators internal regulator. Tip off if you did is the idiot lights won't come on when you first turn on the key and they still won't come on if you reverse the connections.

 

So I found the wire and connected it and now the car stays on and charges, but now its making this weird noise. Sounds like the starter stays on while the motor is on.

 

If the starter is still running, then the wire connected to the starter solenoid might be active or has voltage to it when it should not (wire should have voltage only when starting car).

 

How could I make it so that the starter is only getting voltage when the car is starting?

 

Tell us about the wire in post #14. What was its color, where was it located, and what did you do to it specifically? And have you actually verified whether or not the starter is still engaged w/the car running?

 

When I start the car with that wire plugged in so that the car charges, I hear noises like something's rattling around really fast, and when you shut off the car it has some kind of whining like a rc car. But when the wire isn't plugged in there are no other noises

 

What was its color, where was it located, and what did you do to it specifically?

 

Its a black and white wire located in the cabin on the orange clip. I ran a wire from the alternator to it.

 

Of the two terminals behind the alternator did you connect the B/W wire to the upper one such that the White/Black wire connects to the lower of the two terminals? And how many wires are in the Orange clip where you found the B/W wire? Just trying to figure out where you sourced the B/W wire from (and the B/W wire needs to have voltage w/key t on).

 

For the terminals for alternator i think it's the upper one for power, cause I think the other one is for the grounds for the warning lights which i haven't wired that one up yet. the orange clip has 7 wires.

 

I don't think it's the starter now. I'm going to upload a video of how it sounds after it's done uploading.

 

<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid197.photobucket.co m%2Falbums%2Faa195%2Ftp_ek9%2FVID_20130213_200247_ zps3070a2ae.mp4">

you might have to use headphones to hear the rattling noise. the exhaust kind of over powers it in the video. you can hear it more clearly in person but this is the best i could get.

 

http://s197.beta.photobucket.com/use...0a2ae.mp4.html

the video doesn't work on the post, so here's the link instead.