what is the different between the 91 and 92 wire harness

[dmitch28]

what is the different between the 91 and 92 wire harness. the only thing that i know of is the fuel relay

 

[Scoot5.0]

what is the different between the 91 and 92 wire harness. the only thing that i know of is the fuel relay

Go to Promracing.com and watch this video Installing the Pro-M EFI Harness
It explains all the differences between the 91 and 92 Fox body harnesses. I am thinking about getting the set up for my 91, I am rebuilding it and really want a new harness but am worried about keeping it smog legal.

 

[jrichker]

The fuel pump relay circuit is different and fuel pump relays have different locations. See the diagrams below...

Click on the diagrams to enlarge them...

91 Fuel pump wiring.

Diagram of the fuel pump wiring for 92-93 cars.

 

[coupestang2]

Fuel pump relays ( 92-93) on the harness at the Mass Air Meter. 91 and under, the fuel relays are under the drivers seat.

 

[Danny_master_tech]

Fuel pump relays ( 92-93) on the harness at the Mass Air Meter. 91 and under, the fuel relays are under the drivers seat.

 

[Danny_master_tech]

All I can say, which is good knowledge, is the pcm/ecm pin out on the connector from 89-93 is the same. The injector harness is the same 87-93. Airbags on the fox does not go through ecm.