ok so my friend's car just started doing this last night
so when you turn on the parking lights the corner and tail lights lights up
but when you turn on headlights the corner lights and tail lights dies
brake lights still works though when pedal pressed

so we flick the lights couple times and then corner lights and tail lights come back on

so im thinking relay or electrical wire or switches
im gonna look into the electrical schematics but was wondering if anybody had encounter a similar problem and can give help
thanks

 

im leaning towards a bad light switch

 

Sounds like a bad switch just for the fact that you can get them to eventually come on.