I had to do a reset and thought this was PINNED, i could not find it so here it is.
The 08 owners manual can be a little vague when setting up the shift light the first time.
I hope this will clarify the process.
LEFT BUTTON - SELECT ***** RIGHT BUTTON - ADJUST
1. Press and hold the left (SELECT) button.
2. Turn the ignition on, continue to hold the select button down until the instrument panel boots up .
3. Release the select button.
4. Press the right (ADJUST) button one time.
5. A symbol that resembles a lightning bolt will appear.
6. Pressing the right button again will toggle through the shift light settings--- on, flash or off.
7. Press the left (SELECT) button again... one time.
8. Little dots/squares appear - this is the brightness setting for lamp.
9. Press the right button to add more dots - more dots brighter lamp.
10. Press the left (SELECT) button again- tach needle will move to default setting.
11. Press the right (ADJUST) button to move the tach needle to the desired setting.
( 500rpm increments below 8000 rpm, 250rpm increments above 8000 rpm)
12. Press the left (select) button to exit out.