Weird EATC question

[Joe'sSHO]

My EATC on my 91 plus has recently been reading in celsius and not ferinheight (sp?). I noticed this happened after I grounded a wire that was hanging over the gas pedal. It was a red and I'm not entirely sure what it went to but I figured if it was just hanging there it should be grounded to something. Is there a way to manually switch between F and C? Did I just press some wrong button and cause this? hopefully someone will have an answer for me as I don't really know how it could have made this switch. Thanks.

 

[jelloslug]

Congratulations! You found the F/C wire! Ungrounded the EATC reads in F, grounded it reads C.

 

[Joe'sSHO]

I was guessing that was it. The wire kept hitting my foot so I just grounded it thinking it was something that came out of place. Thanks for the info, I'll be ungrounding it later today.

 

[Tommy's SHO]

If you wish to, you can put a switch on it to go back and forth from C to F.

 

[jelloslug]

A little side note: When you install a digital dash you hook that wire to the cluster. Then when you push the English/Metric button on the dash it changes the EATC also.