piano, that is a good point -- I will have to monitor the temp to make sure it is just high enough to prevent freezing. I have a remote sensor thermometer -- I use it for my barbecue and smoker -- so I will stick the probe in under the heat tape and look at the remote readout to verify that I am getting enough heat.
It looks like the Annod line of products may be the way to go -- they have plug and play heat tapes, if I am reading their website correctly.
If I get this work-around set up properly, it will mean (ultimately) that I have a 3.5 season trailer -- not a true 4 season unit that would be good enough for Canada in mid-winter, but good enough for (say) the Eastern Sierra in late autumn and early spring.
