need 91 sunbird gauge cluster diagram and yes this is fiero related putting it in. I bought a 89 factory book and the wiring is different than in 91.

Are the colors different between vehicles?

no the wiring schematic

My Mitchell program will only save the schematics as an XPS file - emailed it to you, hope it will work.

AL

i looked it over but very confusing,,,, no ports for the turbo gauge setup wrong cluster thanks.

sure it's not a 1990 - I can't find any info on a 1991 having a turbo but the 1990 shows a turbo cluster - just sent it to you.

pin # 17 LT Green goes to the map sensor green wire, I used an 87 Sunbird tach/boost gauge in my 86 GT cluster.

[This message has been edited by AL68 (edited 10-31-2014).]

My point is the wire color scheme on many GM vehicles from at least the '80s through the '90s is the same for many/most of the sending units/sensors, among other things... i.e. the coloring for the sending units and lighting in my '78 Malibu are the same as my '92 GMC pickup - tan is oil pressure sending unit/switch, pink/black is cluster power I believe, white is tach, light green (or maybe dark green?) is water temp, brown is charge light, etc.