Converted my 2010 Muscle tail to a Dark Customs with integrated LED brake/signal light. Since conversion check engine light turns on. Took to dealer for ‘warranty work’. Dealer plugged in stock tail light check engine goes away. They claimed has something to do with sensed Voltage irregularities...
Stock rear marker lights also removed and replaced with LED's in top of the shocks. plastic subframe for the license plate also removed, very cheap lights from Amazon, only problem is they are not water proof. lets see how long they last.