Dang, ummmm....I don't know what exactly to tell you. I know that in order to alternate with your existing flashers....you'll need two relays. You might be able to get away with one. See I really cant tell you because I'm not too sure my self. I'll ask my friend when he comes home. Also about the whole light bulb thing..okay I went to advance autoparts because m flasher bulb was out. And for some unknown reason they gave me the wrong number so got a nonflashing bulb. So that one side never worked untill I figured out that it was not a flasher bulb. I but a flasher bulb in and it wasfixed righ away. I was thinking i was the flasher relay and a lotof the other poeple on the board thought it was my DRLs...even though the cars a 96 (doesnt have DRLs). But they were just tring to help...so I'll try to help you. Do you need to wire the flashers that are one you side mirrors? Or are they already on and working?