91 1g EPROM ecu on a 90 with 94 harness swap

[Ozyeclipse]

Ok I have a 91 eprom ecu and a 90 talon awd
Ive been wanting to swap ecu's but Ive also been told the harness's r different
On the other hand I know my 90 talon has a full 94 engine harness done by the previous owner because he had also done a 94 front clip conversion


Any... tips ...input...

 

[92AWDHX40]

swap pins 6 and 14 i believe if you have a 90 to 91 94 ecu. vfaq.com havent done it in a while lots of information on it.

 

[Ozyeclipse]

Yeah Ive been reading and searching but can't really find what I'm looking for
See my 90 talon wich has no EPROM ecu has a 94 harness in it and I've been meaning to put my 91 eprom ecu on it but Is that possible (knowing I have a 94 harness) Without modifying the pins from 6-14

 

[trboeclpse98]

If the car has a 94 harness then you shouldn't need to swap any wires when putting a 91+ ECU unless the previous owner swapped the wires to make the 90 ECU work with the 94 harness.

 

[And_44]

If you have an unmolested 1994 wire harness and a 1991 ECU no wire or pin swap in needed just plug and play. However if you have one of these combos (1990 ECU/1991-1994 wire harness or 1991-1994 ECU/1990 wire harness) you'll need to do the wire swap.

 

[Ozyeclipse]

Yep 94 harness nothing changed or spliced besides a cop ignition
And a 91 e ecu