Kat lower radiator hose heater
 

Hope this helps someone else do not waste your time and money on one of these.I had 2 of these fail each in less then 1 month they short out for some reason.I am now going with a zero start 1 1/2" and am expecting it to last a lot longer then 2 weeks.Currently 15 degrees N.W. In.

I've bought a couple of Zerostart's on Ebay for about $15 and they're both continuing to work well after about 5 yrs of use.