It's not tied directly to the battery. The battery is connected to the converter/power distribution center, and power is distributed from there. There is a fuse panel that has several fused circuits going to your DC appliances- lights, water pump, lift. And herein lies the problem. The wiring running from its fused location on the panel is undersized. On my unit, it was 12g. It also had a short, 14g pigtail where it exited the back trailer wall under the trailer and to connect to the current limiter. The 14g pigtail was scotchlocked to the 12g main wire, further reducing its ability to carry current. The scotchlock was also completely exposed to the elements under the trailer. It is my opinion that the combination of undersized original wire, coupled with the scotchlocked 14g pigtail, exposed to the elements, caused a significant enough voltage/amperage drop to cause the lift to not work. " I confirmed this and It won’t raise, the motor just clicks but never turns." This (IMHO) is the key to your problem. This is the exact symptom I experienced. I could raise and lower the roof when connected to the truck, but not on its own. The fix was to get more volts/amps to the current limiter/motor setup. By wiring directly from the power distribution center to the current limiter, I bypassed the undersized/corroded original wire with fresh, bigger wire and no interruptions between the power supply and the current limiter. A simple job at minimal cost. Don't be so convinced that the motor is bad- the wiring on these things isn't perfect (or even good). And if this is the problem, and you don't address it, and you spend $250 on a new motor...it still won't work. I was like you- I was convinced the motor was bad. See this thread: http://www.popupportal.com/threads/lift-motor-going-bad.117298/#post-1192852 I wouldn't spend a lot of time chasing wires. You could do a simple test: Bring the battery back to the back of the trailer. Get some jumper cables and connect the battery directly to the current limiter and see if that solves the problem.