Why does my ouku keep draining my car battery

Salvatore, I have been piling my hair out!!
How are ya? I have the same problem in my 2004 Buick Lesabre Custom 3.8. I had been slowing installing (over weeks - drove around with an open dash). When I started having battery problems, I had just connected the bus wire (pink?) from the Ouku to the harness. Also, things started acting weird such as the right window worked intermittently? Also, I have a two modules I haven't hooked up yet (axxcess ASWC steering control and a GMRC-04 chime retention).I could not get the Ouku to read my steering controls. So those are not hooked up to the bus wire. That's next. I am going to disconnect the bus wire and see what happens. 'bus wire' or "data line" pertains to the computer and it's signals. Bus wire = 5V - don't hook it up to 12V. Lakewood Ohio David. If I am wrong somebody jump in and help!!