Secret flap in wheel arch under the mud and stuff.
Left or right hand side?
the socket should just turn out in the back under the hood.
In the engine compartment right on the back side of the corner light there is a ring with a spring that hooks to a tab. Unhook the ring and the corner light slides out
A light ray is always at right angles to its wave front.
assuming you mean the light bulbs, see the answer to "how do you change turn signal lamps both front and rear on a 96 mercury grand marquis" right here in WikiAnswers.
right behind the headlight you reach in and twist the light out its a tight squeese but it can be done. be sure when you put the new light in not to touch the light its self.put the light back in, in the opposite direction it was removed
left front is light gray(-) and tan (+) right front is light green (-) and dark green (+)
remove passenger side signal front light first then passenger headlight and horn should be right behind below the side passenger signal light!
on what car
Constant 12V+ Light Green Switched 12V+ Yellow/Black Ground Black Illumination Light Blue/Red Dimmer n/a Amplifier Remote Blue Antenna Right Front Front Speakers 6 1/2" Doors Left Front (+) Orange/Light Green Left Front (-) Light Blue/White Right Front (+) Dark Green/Orange Right Front (-) White/Light Green Rear Speakers 5" x 7" Side Panels Left Rear (+) Gray/Light Blue Left Rear (-) Tan/Yellow Right Rear (+) Orange/Red Right Rear (-) Brown/Pink
Left front= gray and tan Right front= dark green and light green Left rear= yellow and brown Right front= dark blue and light blue
change the light bulb,