I would like to add a led footwell lighting kit. What would be the correct way to wire/tie this in so it operates the same as the dome light? I think the wiring is a little goofy like the door switch controls the ground not the hot, but I am not entirely sure. Current draw is a 1/3 of an amp so I am not too concerned with overloading a circuit. This would be for a '70 Challenger if it matters.

https://www.oraclelights.com/collec...oracle-ambient-led-lighting-footwell-kit

It has positive and negative wiring so fed it a 12v always hot source and wire the negative into the door switch ground.

some of those Chinese leds are picky as to which is pos and which is neg so it's best to test them with your battery as to which wire is pos and which is neg. Don't rely on color coding. If they don't light when you hook the two wires to the battery then try reversing the wires.

Also you can do way better on the price if you check around on EBay. Here's an example. They would work with the door switch. https://www.ebay.com/sch/i.html?_fr...p;_nkw=footwell+led+lights&_sacat=0. If you don't want to wait for Chinese shipping then select North America on categories list on the left side of the page.

Thanks for the help! Does it matter which door switch? does it need to be both?

it needs to be both. if you only connect to one, say the driver's door, they will only light when you open the driver's door.

The dome light circuit connector is accessible from the trunk, above the left rear inner fender. (at least that's where it is on my 74).

Door switch's are much easier to get to.

I will think about that... good idea that's where the trunk light gets power from too.

Aren't the door switches tied in parallel along with the dome light switch on the instrument lamps ???

that could be a possible "it depends" situation. i have fixed too many wiring issues over the years, i just can't remember.
even so, i "think" hooking into the door switches would still make the footwell lights work with the dome light switch on the dash. [maybe]