Pro-lite

I installed an avc-r, wiring and everything looks fine but the screen on the avc-r keeps changer from menu to menu, as if ther was a button that was stuck! i opened it and tested everything with a tester and everything is ok... anybody know how to use these things or ever had the same problem?

JDMCRX

iTrader: (2)

Did u hook up the grounds to two locations??