Why not just replace the lights with 12v, and have better visibility? After all this is the least expensive part of the upgrade to 12v. You can also get H4 adapters that install directly into headlight inplace of sealed beam. Those make a world of difference.
Before I saw your second message, I had asked an electrical engineer at work about this. As he was explaining something that sounded to me like a cross between quantum physics and ancient Greek, I was able to sheepishly mention your dropping resistor suggestion. He had an enlightened look and said that was an even better idea. :-) He gave me a rig with some resistors to try but I haven't had a chance to fool with it yet.
It is one pair of lamps.
If I understand your second message correctly, I can rig the lamps like this:
12v positive>>>> +6v lamp- >>>> +6v lamp- >>>>12v negative ... with no resistors at all.
Correct?
If you need to explain it further, pretend you're talking to a 3-year-old and then dumb it down from there. :-)
Thanks for the input, Anton. This isn't an upgrade to 12 volt, the car _is_ a 12v car. The reason I'm asking about this is because I already have the 6v lights. They're sealed beam and I like they way they look. Best of all, I think they're "kewl". ;-)
I also checked the amperage between the lamps and got a value of 3.5amps.
1) With these values am I correct in using a 4amp fuse in this circuit?
2) Do I place the fuse between my power source and my switch? If not, where?
3) Is there a specific rating for the switch I need?
4) Using an ampacity chart as shown here:
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it looks like 14ga wire will do, correct?
5) Also, I'd like to wire these lights into the circuit that shuts off the headlights when the ignition is turned off (this is a '72 Super). Would that work if I pulled the power from the black/yellow wire that goes from the ignition switch to the fuse box, then to the light switch, as shown here?:
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6) Is this too much load to add to my system? ('72 Super with stock generator)
.. it looks like 14ga wire will do, correct?>
1) Yes/No. Let's splurge and use a 5 Amp :-)
2) Yes.
3) 10 AMp would be a common rating.
4) Yes
5) Yes
6) No
7) Maybe
8) You're welcome...
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