The way I read the original question is "I am wanting to keep the vehicals as original as possible. "
Seems pretty clear to me what Idahoe Joe is interested in. Some answers are helpful; however, some answers are interesting but are not directed to the question (I know the answer to this observation: "so what")..
6v works just fine if you are not adding a lot of accessories to your truck. Make sure your positive and negative cables from your battery and all your grounding cables are the correct size for 6v and you should have few problems. We can talk about the various problems when and if they happen.
If you want more lights, more powerful lights, air conditioning, electric wipers, power seats, power windows, electric door locks, power antenna, 500w stereo system, ground-effect neon, etc, etc, etc, then go to 12v, get a powerful alternator ,and enjoy your ride. SWitching to 12v also masks marginal grounding and incorrect cables.
Folks, do not ask me where to get the power antenna, I use a hidden antenna in my 12v truck.
Curmudgeon
