what is the different between the 91 and 92 wire harness

dmitch28

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May 3, 2009
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what is the different between the 91 and 92 wire harness. the only thing that i know of is the fuel relay
 
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Scoot5.0

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Nov 20, 2015
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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

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Mar 10, 2000
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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.
 

Danny_master_tech

New Member
Nov 22, 2015
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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.