Motorcycle rear light frustration

I should know how to do this but ....i am frustrated by not get this idea to work

The bike has a two bulb rear light..........i took off the rear blinkers due to installing a new undertail....................

Now i have it wired that the blinkers will blink both the front and rear( BUT) when you pull the brakes the brake overrides the blinking

What i am try to do....is while one bulb is blinking the other bulb acts as a brake lite.......i can not seem to get the bulbs isolated from each other with brake and blinker.

hi,

i think what you may be able to use is a 4 to 3 wire trailer wiring converter. it takes the four leads you have now (left turn, right turn, brake, and tail) and converts them over to (left turn/brake, right turn/brake, and tail).  you may need to add a resistor to ground on each of the turn signal leads into the unit to get the signals to flash correctly.

hope this helps

mark