Is the amp power light coming on?? Or is it possibly in protection mode? A word of advice, those RF amps w/o fuses NEED TO BE FUSED CLOSE TO THE AMP. Don't ask me why the designers didn't put fuses on the amp, but it does need to be fused about 12in. up the power in front of the amp. This will be a preventative measure to ensure you don't toast your amp.