Injector Harness - Mopar part 4481113
 
According to STAR parts this fits:
 
1990 Only.  3.3L v6
Body types:  AC, AS, AY 
 
One other source says it may also fit 3.0L v6.   
 
Here's what I can tell you about it (visually):
I can tell you that it has 6 injector connectors on it, a charge temp sensor connector, a 4 wire o2 sensor connector, and a distributor pickup (or cam sensor) connector (grey). It also appears to have the connector that goes to the sensor that sends a signal to the cluster to tell you the coolant temp.
 
Please do your own research before committing to purchase, as all sales are final.  Again, all sales are final.
 
This is Mopar part number:  4481113