2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 67Get this manual
CABLE ROUTING 1 Starter relay Battery positive lead Tailbrake light lead Starter motor lead Starting circuit cut-off relay Earth lead Battery negative lead Coolant reservoir hose Cylinder head breather hose Wire harness
Pass the coolant reservoir hose through the hose guide Route the earth lead and wire harness under the battery bracket Connect the tailbrake light lead between the coolant reservoir and the rear fender Pass the wire harness through the notch in the rear fenderBe sure that the rear fender and air filter case do not pinch the wire harness