2005 Dodge Durango reads 999,999 kms. I would like to change this! If I replace with a speedo head from a wrecker, will the new reading appear or do I have to change the BCM and if so, do I have to program it after the fact

 

Welcome to DF
Why do you want to replace the cluster? Because of the mileage?

 

Yes I'd like to have it register a more humane number but I don't know if you change the head, will it display differently or do I have to change the BCM!

 

Can you switch to US and not metric?

 

Just a side note, in the States what you are wanting to do is illegal.