I have a 09 road king and just purchased a new speedo the ones that changes lights and all that. My question is where do you plug in the cable to get the mileage to transfer. Yeah yeah yeah I know I need a service manual.

 

By any chance does the cable end look like this.

 

Its the data port, yes. Open up the left side plastic cover, its there.

 

Thanks guys I figured it out. I will try to get pics posted will all updates to wifes king