I have installed electric front seats as you have. I used a stop to prevent rotation past the limit counter-clockwise on the passenger seat (which is toward the window. The driver seat won’t rotate past the steering wheel (clockwise). I also put a loop in the wire so that it can extend to the points of rotation. It isn’t really possible to rotate the seats toward the window, on either side, so blocking the rotation isn’t a loss, at least not for us. I hope this helps.
2015 fr3 30DS, added 2nd A/C-Heat Pump, both A/C have EasyStart, Auto Transfer Switch, CHF with Hellwig Links, Progressive Power Management, TPMS, Blue Ox True-Center, Koni Shocks, HID Headlamps, LED Foglamps, Pioneer Stereo, Keyless entry, Auxiliary Cooling Fans for A/C Condenser, dashcam front-rear, Yokohama Tires, air ride seats, onboard air compressor, 3000 watt hybrid Victron inverter Venus Generator Control, centramatic wheel balancers