I have a small bridge rectifier on a high pressure washer that feeds 24 VDC to the clutch coil for the high pressure pump. It started blowing fuses and I found that whenever I grounded the negative wire of the rectifier, The fuse blows immediately. It has always been grounded, since the negative side of the coil is the metal case of the clutch, Which is mounted directly to the metal frame of the power washer unit. Any help appreciated. Thanks, Steve Wiese.