Originally Posted by greendestiny

sorry for the late reply guys.. chinese new years and was celebrating with family.........anyways -->>

First of all, the mod can be bought at Intelligent Brake Light Flasher - $34.98 Comagination VisiStop as already stated. There's two versions, IBF4 (4 flashes) and IBF9 (9 flashes). The IBF4 4 flash is legal in CA as it says. In some states, these are not legal. But I bought mine on eBay from the same seller and he shipped me the IBF9... I did WANT the IBF4...but he said he wanted $9 extra dollars... so screw that... so i took a chance... read below:

Also, if you check ebay..(Smallest Smart BRAKE Light Flasher see DEMO | eBay)
. the same seller/company is selling it for $17.77 shipped! Yes he did say he will ship a unit between 6-15 initial flashes.... however, he shipped me the 9 flash unit (IBF9).... which I am happy with...


SECOND

I understand that you all may think 9 flashes is a bit much, but keep in mind this flasher does NOT continually flash at a stop... also remember the INITIAL flash is 9 flashes.... a FULL reset (to flash 9 flashes again) requires 25-30 seconds.... if you depress the brake 5 seconds after an initial...it'll only do about 3-4 flashes... if you double tap real fast..it only flashes ONCE !! (so this is for heavy stop and go) .... if you wait say 10 seconds..that will still only flash about 4-6 times......

now third, you have to remmeber, the full 9 flashes REQUIRE you to hold your BRAKES for about what...5-7 seconds??? even then, I don't think on the freeway i hold my brakes that long.... and most of the time, when I hold my brakes that long is when i come to a complete stop... most of the cars behind me are usually pretty far...by the time they approach me (2 car lengths) .. my flasher has already gone solid.....

ok so to recap... lets say you've waited 25-30 seconds..... but if you press the brake..you know it will do 9 flashes?? then just tap once, let go fast, tap again... it'll only do 1-2 flashes!! why?? because it "THINKS" you're in stop and go traffic.... the number of flashes is calculated to how long when you last depressed your brakes and how long you've held your brakes??? get it? thats why the IBF4 conforms to DOT regulations... the IBF9 doesn't...i think only because 9 initial is too much......

i'll be honest...with my IBF9 flasher... the avg flashes is about 6 for me.... in usual socal traffic... so you see it ain't that bad....

now you know what will piss people off?
This flasher here does NOT stop flashing... it constantly flashes when the brake has been applied: http://www.signalz4u.com/