Solved! Android head unit backup camera error on shift from Park to Drive

Installed Rimoody 8 Core 2+64G Android Car Radio Car Stereo for Honda Civic 2006-2011 with Wireless Car Play and Android Auto, 10.1'' IPS Touch Screen. It came with backup camera. I wired the backup camera power and trigger to the backup light in the trunk. Camera worked fine when shifting from Park to Reverse, but failed when shifting from Park to Drive. I ended up designing, building and deploying my own delay circuit for the trigger.