Wiring harness - battery link wire, short 100±10mm, red, sold each. For all models of OSET Bikes (not Lithium models). For 12.5 models and 16.0 24v - 1 needed. For 16.0 36v, 16.0 Eco, 16.0 Racing and 20.0 Lite - 2 needed. For 20.0 48v (2012/13), 20.0 Eco and 20.0 Racing - 2 needed (plus long link wire).