The connectors in the black box on the firewall are different.  The
2.1 harness uses round multi connectors, so you'll have to do some
adapting there.  I did this when fitting a DJ-code harness to my 84.
Although Digijet, the DJ harness uses MV style connectors, idle
stabilizer, throttle position and PS sensor.  I can make pics
available when you are ready for it.

On 4/14/09, Brendan Slevin <totorovan@gmail.com> wrote:
> I've decided it's worth it to me to take the extra time and swap the
> digifant ecu/harness in when I put the 2.1 in.  The only thing that'll stay
> 1.9 is the cooling system.  The temp II sensor on the 2.1 is in a different
> spot along with being a different style sensor.  Is the 1.9 temp II sensor
> compatible with the digifant, just a matter of extending the wires to reach
> the stock 1.9 location?  The coolant gauge sender is a two wire on the 2.1
> and only one on the 1.9, so I feel like I'll have to work something out
> there, too.  I'm excited to get started, just waiting for the tax refund to
> get started!
>
> brendan
>

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Chris S.
Disclaimer: "Death and serious injury may occur"