2012 rgc. Just put a t-max a dragula and andrews 57h in over weekend ran well initially and the voltage is intermittently dropping and the the battery light and engine light came on and pulled code. The voltage comes and goes. Checked ground and it looks fine. T- max looks fine and like I said the battery light and engine light come and go. The voltage w t down to about 10.5 and then goes back up and then back down. This happens mostly when it is hot. Any ideas?