So I have a completely dead ski. All fuses in front and back box are good. I jumped solenoid in rear box and the motor turns over. I put resistance on the key post and the start switch and they are functioning. I pulled the mpem and put resistance as outlined in shop manual and everything checked out except for the brown/black which is the power to the beeper and sensor. Is this the reason for a completely dead ski? Is this mpem repairable or is a different one the only option. Thanks guys!