Your problem is that the pro armor killswitch is a normally open switch. this means when the tether cord is in there is no flow of electricity through the switch. The stock switch is normally closed. Which means when switch is in the on position electricity flows through the switch and to kill the quad you need to break the flow of electricity. That is why the pingel is the best switch to use because you install it in a direct replacement of the stock switch. With normally open switches(proarmor, prodesign) you have to install them to ground the coil and if you leave the quad on with the teather grounding the coil it will burn out the coil.
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Egh who needs them??