Seller provided great support and helped me figure it out. Like others, Bluetooth and USB music didn't work through the speakers, but the FM radio worked just fine. For those of you with Bluetooth issues, this might work. The blue wire in the Hikity Android radio wiring harness is the antenna wire. But in many cars, the blue wire also powers the antenna/amplifier. If you switch the radio from FM radio to Bluetooth, it will turn off the power to this cable (antenna) and also the amplifier, and there will be no Bluetooth or USB sound from the speakers. You must supply 12V to this blue wire so that the antenna/amplifier wire does not lose power when switching from the FM radio. Try playing music via Bluetooth while the FM radio app is running. To fix this problem, connect or jumper the blue wire to the 12V ACC wire. Hope this helps others. In general, the radio is excellent. I launch Car Launcher on the home screen from the Play Store. (see photo) Question to other customers: Yes, the front panel labeled Android is removable. It just shows up. Behind it there is a small compartment for storing USB sticks and other things. Pretty cool little feature.
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