Hello! Your username is giving the board problems because of the period between your names. The grip warmers should ONLY be hooked up to the yellow wire, and the other wire to ground. By hooking the other wire to brown, you've made another kill switch!
Same wit hthe Polaris. Start the machine, then unhook the keyswitch. Get a voltmeter and check each terminal in the plug for 12V. That's the wire you tap into.