I did not wire it on the gauge cluster, but somewhat to an indicator mild bar like revealed underneath (once again briefly). I wired through the ignition to + of the light, then calculated 5.45V when grounded to chassis. The charging process doesnt seem to be wired for the ECU, https://4age20vforsale28256.snack-blog.com/32454330/the-definitive-guide-to-4age-20v-for-sale