2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 65Get this manual
CABLE ROUTING 1 Rectifierregulator Headlight lead (right) Main switch lead Thermo switch lead Coolant reservoir hose Oil tank breather hose Throttle cable Ignition coil lead Rear brake light switch lead Cylinder head breather hose Carburetor switch lead
B Throttle position sensor lead Wire harness Headlight lead (left) C.D.Iunit Route the wire harness on top of the frame Route the headlight lead (right) over the frame and connectAfter connecting the lead to the headlight, place the headlight coupler behind the headlight toward the center of the vehicle