I don't have an i/o box, don't need it with the V2. All there is to it is the factory harness and the auxiliary harness.
At this point I don't think it matters of I load a base map or not, it won't connect either way. The haltech isn't turning on at all, me and Seb are starating to think it could be a bad ecu..
Going to plug in a oem ecu and see if i can connect to thay