Installed a trike kit with reverse on my 2005 883 custom. Alignment problem so I removed the reverse motor but left the cable connected between the dedicated battery + terminal and the bike battery + terminal. Couple days later I removed that cable and the next day the bike battery failed so I hooked the cable back up and rode the bike. Got codes P0107, U1097, and P1354. Installed new battery, pulled all fuses to check. All OK. Master fuse OK. Yesterday I disconnected the cable again, cleared the codes, and then the bike would only run for 20 seconds. Now it won't start at all and I am showing Codes P0371 and P0372. What did I do?