# Harness wire Cross linked polyethylene insulation recommended. https://www.waytekwire.com/item/WM20-3/WM20-3-Automotive-Cross-Link-Wire-/ Orange https://www.waytekwire.com/item/WM20-6/WM20-6-Automotive-Cross-Link-Wire-/ Blue Twisted Shielded Cable For knock/VR/CAN https://prowireusa.com//p-572-22-awg-x-2-shieled-cable.aspx M27500-22SB2T23 PVC insulation like UL1007-20AWG acceptable but second choice.