Be careful fitting after market headlight bulbs, some are just too hot and will melt the perspex headlamp lense!
Depends on whether you`ve got separate bulbs for headlight and hi-beam. The older ones were harder to install because you had relays to fit and wires to splice but the new ones are dead easy.
You twist the bulb out of its housing, take the bulb from its socket and the ballast fits into where the bulb was, the zenon bulb now plugs into the wir.........tell you what, i`ll find a tube clip of it, i`m starting to confuse even myself. :)
She really does go into painful detail she`s not very technically minded but a child could follow her instructions.....or even your wife!