What I did on mime was to cut the #14. Put a spade connector on the IRCM end of #14 and a 3M splice connector on the #17; then connect the two. This ensures that the low speed will be disengaged if the high speed kicks on. Then for the winter I put a female connector on the other end of the #14, disconnect the spade end from # 17 and connect them back together (back to stock). Putting a switch on the #14 will give you more control in the Spring & Fall (instead of it running all the time); but you have to run 2 wires to your switch, don't just ground it, because you always need to de-energize the low speed if it gets hot enough for the high speed fan to run.