I have a s5 instrument clustrr in my car and needing to switch it back to original s4. Anyone have the diagram for pin letters/wire colors to switch it back?

 

As far as I recollect the only wiring alteration that was done is the small harness in between the main harness and the cluster.
If you use the old ones(s4) and the s4 main harness it should just go back to plug and play.

 

It is an s4 harness that someone has moved the pins around for an s5 cluster. Im wanting to re pin it back to s4 cluster.

 

Use the advanced search feature and type in gauge cluster swap for the 2nd generation and you should be able to locate the info needed.