The volume of traffic, and the excessive amount of the above mentioned pair of typical drivers warrent this mod regardless of vehicle. No matter what happens, those of us piloting old iron will get the short end of the stick if an accident was to occur. Jerry and Suzzie are happy to go buy a spanking new electronic laden, looks like every other vehicle out there, with their insurance pay-off, we on the other hand will be holding that bent trim peice comtemplating the best way to revive our old companion while muttering various epithets about the people involved and various objects and animals that happen to stray near them. Back to the what we came here for, as with any swap this will be a custom job, but you'll note that most, if not all of it, is an independant system, and won't butcher existing vehicle wiring for the most part. In a word, reversable.
Planning is essential.
Consider what sort of lighting upgrade you wish, and how you would want it incorporated into your vehicle. Best place to run the wiring to the rear of the vehicle. Regardless of method used, you can mock up the system on the work bench. Nothing like experimenting while sitting on a chair as opposed to tucked upside down under the dash. A dual tail lamp upgrade is probably the simplest of all the rear lighting options, as all you require is a second lamp which can be wired in parallel with the existing rear light.