Hello,

1949 chevy 3100

I have 3 wires coming out of my original harness for the tail lights... one has 12 volts and the other two have nothing. Can someone tell me what these other two wires do? And how do i get my light to brighten when i push the brake pedal? Ive got a wiring diagram but its very small and i just cant see it good enough.

Thanks in advance,

Paul

1964 impala ss
1949 chevy 3100