why dont my brake lights work when i have my lights on
Your brake light switch is bad or has moved away from the brake pedal arm. It's located under the dash, behind the brake pedal arm, up near the fire wall.
I put a new brake light switch in and it is still doing the same thing, and other suggestions. ??
Hhhhmmmmmm.... Then I'm going to say that you have a short somewhere. Start at the tail lights and look at every wire follow them to junction points, connectors and grounds. If you know how to use a test light or a volt ohm meter it would be helpful.
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