I didn't no. i use back heat so just one strip down the back no need to parallel. i think you could easily fit 2 wires together in a ring connector before crimping. but instead of fitting 2 wires into the ring connector you could just splice into the wire up a little further if you wanted to. so you could have a short section of wire conected to the ring for the heat tape. then use another just straight crimp connector and conect your 2 wires to that.