I have read to cut the white wire before!!
Course I have read to cut everyother colored wire before too!
I am with you on the not being an electrician, funny how you can get the the point on here of trying decide to ask a question or not so that you do not get the immediate "use the search" or just get flammed by someone who knows everything.
I cant tell you how many threads I have read on the speed sensor and how many different answers people have on what wire to cut, not to cut, do it , dont do it, it works, it does not work, ect..
So the final verdict is..............white wire.