I noticed you mentioned the low setting.....what is that about?
I ask because that is all I get from the heater. If I turn it up more, it just gets colder. Curious about this heater issue as well, but living in San Diego I don't need it much,
I may have a set that I will not use. Let me check and I'll get back to you here. I changed both of mine out for the DEPO's a while ago and no longer need the side markers.