I saw another example using the headlight switch parking light wire. But that sort of works. It did at first but then goes white. They way I have it installed is a tied the white and red together and connected up to the radio adapter I installed, a pacfrd24. So the radio has to be on for the gauge but that does not bother me. I was just trying to get it to turn blue when the parking/headlights lights are on. Or if anyone has a better way to connect it let me know. I have a 2014 GT. Stating my GEN2 install soon.