u can do it do cheap (ghetto way) or u can buy a kit for this

the kit can run from $25-50 bucks....some are very high tech, some are just basic

as for doing it yourself, theres a module blinker under your driver dash area, its like a lil "black rectangler box) what you do need is unplug it (it is a plug n play unit) and open the box, and u must noe how to use a resistor/ solder..

goto radio shack or any electronic place and buy a resistor/ solder + a switch (turn knob perferable) and then u work from there

if u're really intereste in doing it youself, i can find u a DIY...

but honest wid the money u invest by buyin the solder/switch/ and resistor, u mite as well save some time and just buy a plug n play hyperblinker.. (just my .02)