Water found leaking under center of machine. The drain pump was rusty and observed dripping so I changed it. Now I see a very small dripping coming from lowest point of drain hose. I ordered a replacement. It apparently comes with wiring harness attached. I cannot determine if the wiring can be changed without fully dismantling machine. Would it be unwise to just change the drain hose without the wiring harness? If so, how far will I have to dismantle the machine? Thank you.