signal light re-wire

i want to wire my signal light such that they come on with the parking light AND blink when i turn on my signals.  i remember reading somewhere that i can wire the 12v+ from the signal bulb  to the 12v+ of the parking light.  then wire the 12v+ from the signal to the 12v- of the signal bulb.  when the signal is flashing, both will be 12+ and the light will turn off and thus blink.  i never tried it because i feel something is not right about the 12v+ signal to the 12v- on the bulb. please help.  thanks

maybe try using some jumper wires to see if this works, the worst you can do burn the bulbs.S type R.