1994 corvette proline 6

Ok Gents, I've got a 1994 Warwick Corvette Proline 6 with bartolini pups and a 2-band MEC preamp. I don't play her much, and the guilt got the best of me the other day, so I took her out and, low and behold, she is only working in passive mode. It has the vol p/p for active passive. Being...