My friend has recently installed a Webasto heater on his Ram. The Webasto heater has a relay which energizes to power the heater blower(to defrost/warm the cab). I was wondering if the Espar heater has the same feature. The instructions were pretty vague with the Webasto, and I was wondering where I should tap this power wire into the system to power the blower. I thought that maybe just running it to the power side of the blower switch would work, but I don't know (without having a schematic) if it would feed back through the system to something else. I thought I'd ask here and see if any of you guys running the Espar heaters have this feature and if so, where Espar wants you to tap into the system. . Thanks in advance. .