Introduction
Jimnys use H4 light bulbs in headlamps.
The ordinary light bulbs can be replaced with something stronger to give better illumination.
Solutions
Extreme solutions
There are several solutions "on steroids", like Xenon(alike) lamps, various HiD technologies, LEDs, etc.
However, most of them are illegal for on-road use in most developed regions of the world, unless the vehicle goes through some recertification process. Therefore, none of those "super solutions" will be covered here.
Compatible solution
One solution (which should be legal) is the use of better engineered standard halogen technology bulbs.
Two popular bulb products of that type are Osram Night Breaker (much improved illumination, much reduced life expectancy) and Osram Silverstar 2 (moderately improved illumination, slightly reduced life expectancy).
There are other such products from other manufacturers of course. The important thing is that you look for a standard halogen technology bulb, but with improved illumination.
Beware that illumination strength and life expectancy are usually in reverse proportion.
Page last edited on 26/12/2016 by user Bosanek