Harness colors don't match any diagrams???

[vristang]

I just tried to find the wires for TPS and the ECT. According to Chilton/Haynes/and the diagram always posted by jrichker...

tps pin 47 - DG/LG (dark green / light green?)
ect pin 7 - LG/Y (light green / yellow?)
My ACT (pin25) is colored correctly, according to all of the above mentioned diagrams.

My harness colors
pin 47 - Gray/White
pin 7 - Green/Red

The car is a 90 GT stock was 302 / t5.

Am I color blind?
Has my harness been swapped?

I appreciate any help
jason

 

[my$100project]

What exactly are you trying to do, test them?
If you are trying to test your tps, you can do it without a diagram. There should be 3 wires. Your Signal, 5v reference and ground. Take a multimeter from B- at idle to all 3 wires on volts. The 5v is your reference, the one that is between .9 and 1.2 is your signal and the other is your ground. For your ect, just check resistance of the sensor itself, check it at operating temp, and again when cold. Compare Reading's to alldata or one of jricter's link. Sorry, I can't remember the ect or tps wiring. I think the middle one is your sensor wire though. If you don't have a scope, do a slow sweep of your tb should go from around .9 closed throttle to about 4.6 wot. ---I think.
If this doesn't help your cause, sorry. I don't remember colors.

 

[jrichker]

Take your pick of the diagrams...

AutoZone wiring diagrams for Mustangs

http://www.autozone.com/servlet/UiB..._us/0900823d/80/16/71/3c/0900823d8016713c.jsp for 79-88 model cars

http://www.autozone.com/servlet/UiB..._us/0900823d/80/19/59/5a/0900823d8019595a.jsp for 89-93 model cars

http://www.autozone.com/servlet/UiB..._us/0900823d/80/1d/db/3c/0900823d801ddb3c.jsp for 94-98 model cars

 

[vristang]

Thanks for the response.
The purpose for wanting to hook up a voltmeter to the pins is to simply see what the output is during different driving conditions. I want to see how the ACT fluctuates under driving conditions.
Call it "low budget data logging" less the "logging".
I have set the tps, and I have no reason to believe the act/ect to be bad.

I did get the ACT to work, with an output to the voltmeter.
Should I trust the pin #s in the diagrams, even though the colors don't match?

 

[vristang]

Take your pick of the diagrams...
http://www.autozone.com/servlet/UiBroker?ForwardPage=az/cds/en_us/0900823d/80/19/59/5a/0900823d8019595a.jsp for 89-93 model cars

This one did it! Figure 6, 1991-1993. My 90 must have been produced late in the 90 production run.

The pins #s are the same, they just changed the wire colors.

Ford Engineers

jrichker is my idol!