The car is a 73 dart. Got the thing on the road finally and now I have both my rear brake/turn signal lights on all the time. Keeps draining the battery obviously.

I have some time tomorrow hopefully to look at it, would there be an obvious place to look to start on these?

The side marker lights(rear) don't seem to turn on, gotta check the bulbs first, maybe they're cooked. Either way, rear lights just stay lit.

From the diagram it seems that off the instrument panel plug, one power wire for each bulb, then 1 ground that splits to run to both (all rear main lights) then each housing is grounded via mounting. Is that correct? The rear light assembly is it's own circuit with nothing else involved?

I just don't have a ton of time tomorrow and don't want to tear into it if i won't finish it. It's gotta be easier than the whole engine wiring I would hope!