manual/ auto ecu

[smokeythewhitewagon]

From the top, I'm gonna try to put a 5MT from a 95L into my 98L, which has a trashed 4EAT.
I have to take the ECU from the Manual car and replace the Auto one too.
My question is, do I have to also swap the entire wiring harness?
There are a few wires that need to be switched (i.e. clutch, neutral)
Could I get away with just snapping the existing wires into the new ecu?
Also, if anyone has done this and can explain EXACTLY which wires need to be moved, grounded, etc, please let me know. I simply don't have the time to try and figure it out on my own.
Thanks!

[smokeythewhitewagon]

I just read the link to http://www.legacycentral.org/library/tr ... onvert.htm (http://www.legacycentral.org/library/transmission/convert.htm) which was very helpful. I'm still not totally clear, though.
The Neutral and reverse wires were explained clearly, but it mentions you have to "short" some wires. Does this mean you have to "ground" them?

[92BJlegacy]

Check out this write up, way more helpful. http://www.surrealmirage.com/subaru/swa ... rical.html (http://www.surrealmirage.com/subaru/swap/electrical.html)

[smokeythewhitewagon]

Thanks very much sir!! Bookmarked!

[StatGSR]

as noted on the linked website, you do not have to swap ecus....
"ECU MT/AT Identifier Info

Subaru does use different ECU's between the MT & AT equipped cars, however there is a MT/AT identifier pin on the ECU's. This pin tells the ECU whether the car has a manual or automatic transmission. The pin can be found at pin 20 on the ECU's B48 connector. The factory manuals state that for AT's the MT/AT pin should read 0v, and the MT's should read 5v. The ECU has a reference voltage that it sends to this pin. If the pin is grounded the voltage will read 0v. That pin is grounded on the automatics. All you have to do is snip the wire going to the MT/AT pin, and the ECU now knows the car has a manual transmission."

[smokeythewhitewagon]

I love you long time StatGSR!

Now I just have to locate pin 20 :smt017

[smokeythewhitewagon]

OK, now i'm even more confused. big supirse.
I downloaded a wiring diagram PDF that shows that the AT/MT identifier is pin 81 on the P84 connector. (not pin 20 on a P48?)
The PDF I downloaded is for a 97. It's a complete diagram for an OBD II.

This link shows the ECU for bc/bf/bj (a.k.a. first gen legacy). That would mean it has the OBD I, right? This has a P48.
http://media.photobucket.com/image/rece ... p/pin2.jpg (http://media.photobucket.com/image/recent/Jessekrs123/EG33%2520swap/pin2.jpg)

So, to sum it up, I just want to make sure that I need to clip wire 81, not 20. (20 would be a gnd for the TPS on OBD II according to my diagram).