Windshield wipers won't work

I bought a 93 sentra that came from the States, so it did not have a daytime running light module, so one was put in after market by the dealership I bought it from. But the way they installed it, the lights would go on when I turned the key to ACC so I could not have my radio on with my lights off. So I decided to get that fixed, I took it to a guy that said he could easily fix it, and he did. But a couple days after he fixed the lights I tried to use my wipers and they didn't work. There was no noise from the motor, and they wouldn't spray either. It just seemed dead. I checked the fuse and it was ok. I don't know if the guy that fixed the lights could have cut a wire or something, but i don't think anything was cut or not connected (it didn't look like it). I also installed a new deck in my car, but I don't think there is anything to do with the wipers near the stereo, but I could be wrong. So could something have died on me? Could it have been something the mechanic or I did? Or could it be something else?

Well, I took it to get it checked. And for all of you that were as confused as I was, I'm embarassed to say that it was actually just the fuse. The fuse was ok, but apparently it wasn't in all the way. Which kind of confused me, because I actually took it out and replaced it. But that's what the problem was.

its ok i spent 8 hours trying to diagnose why my car wouldnt fire off after my header install, after all the headache and complaining it turned out my ecu cable had been jiggled loose slightly and wasnt sending signal to my injectors..........lol