Stop in for a cup of coffee

Anyone know what wattage the bulbs are on the 7 inch headlights on the darts?
yup
What number?
^^This^^

You answered your own question. There is different wattages depending on what is used. I just looked in my manual. It doesn't say. You might need a owners manual to find the number and today's wattage is probably different than they were in 65.
Yup. '69 Dodge FSM says 6012
Be curious what a '65 FSM lists.
whatever factory is? Google search is all over the place
And failing to find your owners manual or FSM, you could try a search here and on moparts rather than g**gle. :poke:
So with the amp hours and watts being nearly identical I was thinking that kit might be a good upgrade for the dart
Wat ya talkin' about there Dukey?
I thought yous were talkin about lights?

I’m planning on doing my historic highway cruise in a couple years
Then follow the advice of Stern has posted here, and 'Virgil' has on candlepower forums.
Relays with fuses getting power from the alternator. Just buy Rob Yule's kit and be done with it.
Remember hook it to the alternator output stud, not the battery or relay.

Then your choice:
*The Nighhawk halogen seal beams Mike listed. Those and only those Nighthawks.
*Hella's "Visionplus" H4 with a good bulb. Phillips, Narva are both have some decent bulbs. Their +15, or +30 will put out more light, same power, but shorter life span. Hella's branded bulbs generally not that great.
*Cibie H4 E-codes for left hand drive with good bulbs. These are probably the best available within reasonable price (and still not cheap). You can get them from Stern, or one or two other US people. (IIRC one goes by the name Busdepot)

Updated Hella "Super" 7" H4 Headlights