Now ill admit that this is only an opinion but those headlights are crap and will ruin you car, the people that have gone that route always end up hating them, and most of the time there fitment and lights are crap..... now yes its your car and your style but if you do end up with them and post pics of your car on this website youll most deffinally get laughed at,
if you wanna change your lights and look good try these
http://cgi.ebay.com/ebaymotors/89-94-Ni ... ccessories
But if all else fails and you still want those lights just check eBay there prices are way better
And about op's problem deffinally check your relays and fuses, and make sure the light switch not the headlight switch but the one on the left of the steering wheel doesnt have any wires cut, and the switch aint bad... Good Luck!!