I have a 10A 12V power brick with a cigarette socket output. I also have a 4-way cigarette splitter, so that I can power the mount, camera cooler and dew heater. 10A should be plenty of juice for that combination. If I connect the mount only, directly to the power brick output, the input voltage as measured by the handset is 11.4V. When slewing both motors, it drops to around 11.2V, and the LED stays on constantly. If I connect the mount through the 4-way adapter into the power brick, the voltage drops below 11V, and the LED sometimes drops out. Lastly, if I also connect the dew heater to the 4-way, the voltage drops down to 10.5V and the LED flashes like a Christmas tree.
I have 13.8v on my pier your not getting enough juice .
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