Received my hardwire kit this week (Tuesday - Thanks Roy!) but waited until last night to put it in. With temps over 100 (cooling off to 96 by 11PM), yesterday's high of 83 seemed like the perfect opportunity to install it.
I already had power wires routed in my ceiling from my previous RD so I just spliced this on into that one. I left enough excess up there to be able to lower the RD to mid level window for my long trips. My last long trip was from El Paso to Birmingham, Alabama taking only 14.5 hours. ;-) That was speeds ranging from 50 to 130 (when possible and safe - namely on that long empty I-10 corridor between El Paso and I20 - one stretch I was able to maintain over 120 for 2 hours). Normally the RD is right below the tint line for my normal driving around town.