its flashing fast because the flasher thinks there is a bulb blown... the flasher needs to see a certain amount of resistance to flash at its proper speed. The wirring has nothing to do with it.

I wouldnt say what you did is nessecarily legal, because there is no front turn signal now.

If you really want to keep it that way, get a "variable load" flasher and wire it in place of the stock flasher. (They are usually too big to fit in the stock flasher location, so short wires are needed)