2000 Pontiac Sunfire cluster issues.

[Willburg1989]

Im working on the wiring of this vehicle. So far I have found out this-http://www.manualslib.com/manual/716103/Automate-435.html?page=11#manual Has been added on to the vehicle by the previous owner. Currently the dash is fully removed to gain better access to all wire bundles. Only the fuel gage read out works (which I have found it to be a blue wire split off into two wires with a wire clip. The odometer reads out the correct mileage. Also, the shift indicator light does work. The rpm gage slightly works but not as it should. The temperature gage does not work. And the mph gage does not work. Lucky for me I have been using a gps speedometer app which has been quite accurate.
I need to have all 12 volt wiring diagrams for the dash to aid me in fixing my issues. Also, I can post pictures to help gain a better understanding of how botched a job it is (has relays-fuses inside the wires and also wire cliped to certain wires. I can tell it has been hot wired. (Titles in my name Legally and it has been checked to see if it was stolen.

 

[melsg5]

how do you know all these issues arent caused by something other than the cluster?
1. The speedometer doesnt work, how do you know you dont have a bad vss?
2. Shift indicator light, not a burnt out bulb?
3. You have confirmed the temperate sensor works and has not wiring issue?

you can find wiring diagrams in Hanes and Chilton manuals and Autozone has some diagrams available after you register.