Bechermand

Hi All I am stuck finding out what causes this, strange behavior. The behavior is. When front windscreen wipers are in one of the top two positions, everything in the instrumentpanel goes black 1/2-1 second, i am not sure the engine goes out as it happens very fast. The behavior can be repeated, just using the wipers. The hole thing started out with sprinkler suddently not working. Following has been done to diagnose and fix the problem but has not fixed it. 1. Battery has been changed to fix low battery voltage. 2. Plug for trailer connection was been checked for shortcircuits. 3. wires running by the wiper engine and arms has been checked for wear and shortcircuits. 4. Stalks to Wiper, turnsignals etc. has been change, to fix errors ind the contacts. Status right now is. Front and rear, Sprinkler not working, fuse burned. Front Wipers not working, when used instuments / car has a blackout, errors in instrument panel, restart the car everything works fine but wipes, sprinklers. Does anyone has any great idears to what to do next ?