:welcome: to the forum. Unfortunately, it looks like anyone with the problem has disappeared. Could be time for you to seek professional assistance, too. Someone skilled in use of a scan tool and diagnostic software could likely find the problem quickly and get it fixed for you.Was there ever a solution to this? I changed the motor (twice). Switched the lines and when I press the back button they spray fine. Changed relays. Fuses. I can't imagine the switch is bad because when i press it it makes a clicking sound near where the relays are. I'm at a loss and pulling my hair out. Help? Please!