Resolved Black top CAS to 1990 green top adapter

[ItsTwan309]

Does anyone know how to wire the green top cas to my 92? My black top went out and I have two green spares. I want to tear apart my blacktop and make a pigtail harness so I dont have to chop my factory harness

 

[Adam]

Aren't they the same plug? I switched from a green to black and I didn't change anything. In fact the green ran better until I got link.

I could be wrong on the wiring as it's been a few years but I know I didn't change plugs

 

[19Eclipse90]

Assuming you mean the 1990 version? Because, as documented below, there are two "green top" versions and the 1991-1992 version is a direct replacement for the 1993-1994 version:

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So, the 1991-1994 schematic is:

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With special focus on:

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Then, referring to this: The 1990 Engine Control Wiring Harness - B32: CAS, you can see the wiring for the 1990 version and note the wire colors for the HARNESS match the wire colors in the above diagram. Wire colors aren't always so important as the function of the wires, but the colors make it easy to see that the function of the wires are the same on the 1990 and 1991-1994 engine control harnesses.

So, easiest approach to put a 1990 CAS in a 1991-1994 car is replace the rectangular connector on your 1991-1994 harness with a square male-end connector to mate with the 1990 CAS. If you ever need to go back to using a 1991-1994 CAS, a harness could be bought or built using a square female-end connector for the 1990 CAS, with a pigtail, and the rectangular male 1991-1994 CAS connector on the other end. Sheridan Engineering does offer this harness already. Check our vendors for like ExtremePSI, JNZTuning, etc., or go direct.

 

[ItsTwan309]

Assuming you mean the 1990 version? Because, as documented below, there are two "green top" versions and the 1991-1992 version is a direct replacement for the 1993-1994 version:

You must be logged in to view this image or video.

So, the 1991-1994 schematic is:

You must be logged in to view this image or video.

With special focus on:

You must be logged in to view this image or video.

Then, referring to this: The 1990 Engine Control Wiring Harness - B32: CAS, you can see the wiring for the 1990 version and note the wire colors for the HARNESS match the wire colors in the above diagram. Wire colors aren't always so important as the function of the wires, but the colors make it easy to see that the function of the wires are the same on the 1990 and 1991-1994 engine control harnesses.

So, easiest approach to put a 1990 CAS in a 1991-1994 car is replace the rectangular connector on your 1991-1994 harness with a square male-end connector to mate with the 1990 CAS. If you ever need to go back to using a 1991-1994 CAS, a harness could be bought or built using a square female-end connector for the 1990 CAS, with a pigtail, and the rectangular male 1991-1994 CAS connector on the other end. Sheridan Engineering does offer this harness already. Check our vendors for like ExtremePSI, JNZTuning, etc., or go direct.

thanks for all the great info, my connector kit will be here this weekend so I can keep my factory harness intact. Ill update with how it all works

Assuming you mean the 1990 version? Because, as documented below, there are two "green top" versions and the 1991-1992 version is a direct replacement for the 1993-1994 version:

You must be logged in to view this image or video.

So, the 1991-1994 schematic is:

You must be logged in to view this image or video.

With special focus on:

You must be logged in to view this image or video.

Then, referring to this: The 1990 Engine Control Wiring Harness - B32: CAS, you can see the wiring for the 1990 version and note the wire colors for the HARNESS match the wire colors in the above diagram. Wire colors aren't always so important as the function of the wires, but the colors make it easy to see that the function of the wires are the same on the 1990 and 1991-1994 engine control harnesses.

So, easiest approach to put a 1990 CAS in a 1991-1994 car is replace the rectangular connector on your 1991-1994 harness with a square male-end connector to mate with the 1990 CAS. If you ever need to go back to using a 1991-1994 CAS, a harness could be bought or built using a square female-end connector for the 1990 CAS, with a pigtail, and the rectangular male 1991-1994 CAS connector on the other end. Sheridan Engineering does offer this harness already. Check our vendors for like ExtremePSI, JNZTuning, etc., or go direct.

my green top is the 90 style with the different plug

 

[mitsubishikid]

I'll make it stupid simple for the next guy that asks.

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