The horn in my Powerhouse 1000 was disconnected. There are 2 resistors (square white ceramic) that one came off completely. I imagine that someone cobbed the thing so the horn was bypassed. The P1000 jackplate has a jack (8ohms) for the lows, and a jack(8ohms) for the highs. It also has a full range jack(4ohms) and a tweeter rocker switch (HI-OFF-LOW). I don't know where these things go back. Does anyone have a wiring diagram????