i cant for the life of me figure out why sometimes my trunk and tail light

brakelights dont work. The top brake light(3rd brake light) in the window always works but the

others sometimes works and sometimes not. Switching on the headlights does

turn them on but no the brakes. And again its not the bulb because somedays

it works. Id hate for someone to rear end me knowing it probably could be

avoided. Id appriecite any and all input. Thanks

 

Anyone?!?! I'm stumped. What really throws me off is the fact that sometimes the tail lights work sometimes they don't. But the top window light anyways works.

 

Does the brake "lamp" warning come on at any point?

The trunk light and the outer brake lights do share a common ground point (G601)

 

Thanks for the reply poorman. Um no the brake light warning on the dash does not come on. And I will check that ground you specified later on today. Thanks again for the input