They made me a jumper wire to use. It keeps the water valve open while I pump the antifreeze through the system.
Don't have access to the jumper wire-RV it is in a seasonal campground but I will try to remenber to post a picture in the spring. It is really a simple thing to make, Its the male end of an electrical cord with two flat blade connectors attached to the other end. To use it you unplug the 110v cord for the icemaker in the fridge compartment, unplug the two connectors on the solenoid for the icemaker, plug the two connectors of your jumper wire to the solenoid and plug the other end into the 110 outlet. What it does is opens the solenoid and alows you to pump antifreeze into the unit. I have used it twice and it is easy and very safe to use. It is what the RV dealers use.
If the ice maker was never used do you need to worry about when winterizing ?
Where would I find the water shut-off valve for the ice maker? Would it be behind the UDC? Any information would be greatly appreciated.