The large purple wire from the starter runs to E2 ONLY IF
you have a manual transmission.
If you have an AT, that large purple from the starter runs to the AT switch - 7 pin connector position E.
The large yellow wire on the 7 position AT switch position G runs to C500 A4.
A Fiero body harness that originally had an automatic transmission will send to C500 the starter signal on A4. The AT body harness will have nothing on pin A2. That fat yellow wire from C500 A4 runs to the AT tranny switch. If the tranny is in P or N, the AT switch connects the yellow wire to the purple wire. Thus when you turn the key to start, the starter will only be activated when the transmission is in P or N.
[This message has been edited by phonedawgz (edited 11-22-2013).]