The left front position is the outside hitter. The middle front position is the middle hitter. The right front position is the setter.
The front right, front middle, front left, back left, back middle, back right
The front impact sensors are mounted behind the fog lights. If you do not have fog lights, just look through the fog light position in the front bumper.
Under the front of the right front head.
the position light bulb is located towards the inside of the headlamp. Its the small "peanut" type bulb. You can access it by removing the high beam bulb and some needle nose plyiers should do the trick.
A light ray is always at right angles to its wave front.
setter or offside/rightside hitter
The player who served last will be in position one until there is a new server, unless they are substituted for by another player or the libero.
The camshaft position sensor is on the front of the engine block. It is on the right front about half way up.
left front is light gray(-) and tan (+) right front is light green (-) and dark green (+)
Not sure what you mean about "front position light" however most of the time your owner's manual will address these repairs. See sources and related links below for 2004 Volvo XC90 bulb information.
On my 2004 XC90 the lens covering the position light swings open left to right. The bulb is easily accessible.