Protection light stays on no output
i have the same amp and have that same issue before. yes you are correct that if you take off the RCA cables on the input there will be no light. either you have plug the remote line on the 12v or a grounded sub. it should be 12v/remote/ground from the corner. good thing im just fixing my sub earlier. it is no problem if you have hooked the remote line on the 12v, it is the same supposed to be. to check if your amp is working, short the 12v/ and the remote line and play your stereo and see if your sub is working. by the way, what sub are you using? i just blew my sub and need a new one.