308 headlight bounce

My 308 right headlight bounce every now and then when I have the headlights up at night. I notice that just before the bounce the light beam kind of dropping little by little and usually when the car went through bumps, then the light just close and bounce right up one time and stay. Then, the car went through bumps again, it starts again.
I try to clean relay and nothing... Please advise...

 

This is usually due to either a diode on one of the headlight motors going bad/having a loose connection, or a headlight relay acting up.

Try tapping on each of the headlight relays to see if you can make it happen.

Could just be a loose connection, try removing & reinstalling all of the headlight relays.

 

Great advice Verell. If i may add, if you mean physical bouce, there is a bolt on the light housing located towards the center of the car on the center of the housing when the assembly is up (lights on). Mine got loose a bit and caused the headlight to 'bouce' due to the loose bolt. Not sure if this is what you are referring to???

 

There is a tech article on (dare I) ************ about the headlight diodes. Perhaps this might help.
http://www.*****************/discus/messages/30/2771.html?1097755690

 

Cann't get the link.

 

I have tried the relay. I will try the bolt. Thanks guys....