Hi there!

I have a 2012 Heritage Softail and I would like to change the speedometer backlight to blue. I don't like the orange illumination color. Is there a bulb that can be replaced? Thanks in advance for your help!

 

Not sure about the bulb but you should just upgrade to the speedo/tach.
It's a worthwhile upgrade and allows you to customize it to many colors.

http://www.harley-davidson.com/store...477411--1#tabs

 

Welcome to the forum from Texas.

The speedometer backlight is an LED, not a bulb that can just be changed. The LED can be changed to a different color. You can do it yourself if you care to undertake that modification or you can send the speedo to have it done for you.

Here is a YouTube video on the procedure

Here are other threads related to this
Changing speedo backlight color

Here is a popular company that can do it for you
http://www.gaugemodz.com/