I just got a 650 and the motor and wiring was in 2 boxes tore completely down.I got everything back togeather except 2 hoses and 2 wires.one wire is a solid black wire that comes out of the harness by itself around the battery box. the other is a yellow wire with a black strip about midways of the atv. one of the hoses is a oil hose that comes out of the   casing in front of the brake but i don't know where it goes. The other hose comes out of one of the breather tubes and don't know where the other end goes any help would be great.  

the black wire from the battery is a ground wire. The first hose sounds like a hydralic break line, it would go up the the front brake resovior. Usually breather tubes just hang down