I posted this under my other Thread but figured that wasn't the right place so I started a new one. I just received and installed my brake controller. I forgot to disconnect the battery before installing it but other than that everything went fine. I have an appt. tomorrow at my local Dodge dealer to get it flashed. My question is will not disconnecting the battery cause any issues? How about with the flash? I also didn't get a check engine light upon start up after installing the controller like some other people did.