Help with rear brake lights

Aftermarket rear brake lights not working checked all fuses and wires still not working

2001 toyota prerunner
4 cylinder

 

do you have power and ground at the plug with the brake lights on?

 

yes used a test light and it lit up when we hit the brake pedal

 

it may be a bad bulb if you have power and ground at the light socket.did you ground the test light to the socket or to the truck?

 

grounded it 2 the truck? was that right? we put new bulbs in should i ground it to the socket?

 

no,what i'm trying to say is, you said you had power to the bulb,make sure you have a ground,which would be the other wire.