Hi allThinking about a temperature gauge on the K75 and research indicates that the sender uses the coolant drain hole. (after looking at the K Bike Clymer manual) so.. Can anyone advise what VDO or other aftermarket unit/gauge etc and sender unit actually fits and will work? Is the k100 etc unit/sender ok if I can get a second hand unit? Also, looking for heated grips (as I am getting old) so wondered what after market units would be ok to use. There are some kiwi units around but not sure if they will fit  http://www.warmfit.com. Anyone know the tube size and maybe had experience of their products?Thanks for any advice  😀Stu