I'm hoping to get some insight. Found a nice LBZ and ordered the EFI Live and CTS2 setup. Followed the instructions and loaded the EFI Live then moved onto the switch. Installed and it wouldn't switch tunes, turned out I had put black wire in the wrong spot (possible root cause of issue??), got that corrected but it still wouldn't switch tunes. Ended up ordering a new switch after testing it and not being confident in the readings. Installed the new switch, still not changing tunes. It stays on the 4.68 voltage. When I call who I got it from all I get is "the switch isn't installed correctly" and that the 4.68 voltage reading indicates that the tune is loaded. I've attached pics (best I could do trying to hold the harness, balance on the bumper and snap a picture) of the wires installed and the AutoCal screens. I can get more if someone can point me in the right direction. I'm so frustrated that I'm about to say screw it and take it to someone local but I can't stand the idea of paying to install this when it isn't (shouldn't be) this difficult. Please Please Please does someone have an idea? Thank you!!