I'm trying to add heated Avon grips to my new bars with tbw. The instructions say to add the red/black extension wires to the red/black wires coming from the center of the tbw sensor but my tbw has white/black coming from the center not red/black. It is the longer Harley sensor without the plug. Not sure if the original had the red/black. Not sure which colors to connect. Any help would be much appreciated.