96 integra drivers side rear running light not working but brake light does. Its the same bulb so what the hell.checked all fuses and replaced bulbs still nothing, what do i do?

 

Did you replace the bulb witj correct part number

 

The bulbs are finethat is not the problem even took the one that works and put it on the drivers side and still nothing

 

You obviously know it isn't the bulb. Have you bothered to do any basic troubleshooting yet? Is the socket intact? Corroded terminals? Done a continuity test on the ground wire? Power at the bulb with the lamps on? Power from the switch?

 

Well the socket is obviusly getting power if the brake light is workin bein the running light and brake light are in the same bulb and the the brake light works

 

I'm not familiar with the term "running light" (do you mean the tail light?)

A stop/tail bulbs has two filaments (two separate circuits)

So the brake light working doesn't mean the tail bulb filament is getting power.

There are two terminals in the socket, one for the brake light power supply and the other for the tail light power supply (common ground through the metal body on the bulb).

With the lights on and the brakes not pressed, you should have power at one of those terminals.

If not, the tail bulb is NOT getting power

 

The above is correct.

Parking, running, and marker are all common (and correct) terms for the rear lamps (lamp being a more correct term than "light", but common usage allows them to be interchangeable) on a car. "Tail" lamps are an ambiguous term that people sometimes use to mean the previously mentioned lamps, but can also include the brake, turn, and reverse lamps too (anything at the tail of the car).

People use "running lights" to mean anything that produces light used to see the vehicle, but not to provide usable light to drive by. This includes the front, side, and rear marker lamps, and "city lights" if equipped.

This concludes today's English lesson.

OP, automotive electrical is fairly easy and safe to play with. Go get an automotive electrical tester if you don't have one

or a multimeter (always handy to have), and perform basic troubleshooting here.