I recently installed 2 of the part number LINZ6 amber strobes(Whelen) on the back of my Precedent and OMG so much power in such a little unit. These units have the flasher made INTO the unit and you have over 50 different flash patterns you can program by touching the program wire to positive power. The next thing I will be installing is the new CORNER LED strobe called the Vertex. These units replace the corner strobes needing a seperate power supply. The flasher is made into the cable on the Vertex unit. All you have to do is put 12 volts to it and program your flash pattern. I will report my findings to you. As you can tell I love lighting things up!! Just look for the brightest cart and thats me!!