1999 C2500 speedometer wire. Please help.

[nicklatech]

I just put in a diesel and I no longer use the ECU for the speedometer. Can someone give me the cluster diagram or tell me which of the wires coming out of the ECU goes to the speedo? I have been looking for two days and I cant find anything with google.

Many Thanks
Nick

 

[nicklatech]

http://www.gmforum.com/performance-brainstorming-tuning-96/ecu-pinout-diagram-302528/

<-- THAT WORKED FOR ME to find the speedo wire. its NOT for our trucks. thats my warning to you.