scotch
+1y
Does your controller have spade connecters for the main power lines, or does it have pigtails. The reason I ask is because I have the older style with spade connecters. If you tug on them very hard at all pulling a power lead off, the spade connecter will break look from the circuit board and you will end up with an intermittent, or no power connection at all. This was a common problem and why the new models have pigtails.
If you have the old style, I would make an intermediate pigtail with spade connecters and leave it installed in the controller. Then just unplug the end other end up from your wiring if you even need to remove the controller.