90% plus of people of are right handed. Therefore most people reach to their right ear with their right hand and individually "remove" the right ear piece with their right hand. In the same motion they "pull" the left ear piece from their left ear, putting strain on the wire-earbud connection.
this repetitive pulling on the left wire eventually causes the wire to disconnect from the left bud.
to stop this left sided wear and tear: stop "pulling" your earbuds out but remove them with your hand gently.
to put headphones on your ears is to put the left side of headphones is put headphones away from your ears
If you are deaf in your left, ear nothing can help you to get sound from your headphones there. It's over now.
I left my headphones right here.
Your left foot goes first. Also, always mount on the left side on the horse.
Almost always used in it's plural form ("headphones"); referred to as a singular, you would normally be identifying one e.g. "my left headphone is louder than my right one".
IMO, working on the SRS should be left to a professional. There is always a danger when working on this system. For that reason, I recommend you seek out a professional.
To indicate which ear-piece feeds the left channel and which the right.
it doesnt matter but i always look left first
No it just means that in stereo the left sound will be in the right ear and the right sound in the left.
First have you replaced the bulbs in it and there not working or do you need to know how to replace them
That almost always means that you have ripped out one or more of the connections to that earpiece. to solve this you can solder the connection back on if you can get them apart but if not you just have to get new ones.
First try to move the mouse all the way to the top left corner, as you might just not be noticing it where it is. If it won't move to the top left corner then make sure the mouse itself is powered and working as damage to the cord is not always obvious visually.