Pictures from earth
These are pictures of the RIGHT tail light assembly.
Don't mind the darker splice on the green wire. That's for the trailer wiring.
The light arrangement on the wagons is pretty silly.
Top: running and BRAKE
2nd: running
3rd: blank
Bottom: reverse (inner), turn (outer)
With the headlights on, the brake light doesn’t jump out at you. This is why I removed the running light (2nd one down) and added a brake light to the blank slot.
You'll need to take a hot knife or dremel to the housing if you want to use the 3rd slot because it's blank
. I enlarged the 2nd slot to run an 1156 base bulb.
Be sure to test fit the assembly before screwing the housing/lens back to the car.
Pull upward and inboard on the housing while tightening the hardware. The turn signal center conductor may short against the sheet metal. Note the tape for troubleshooting.
The 3rd bulb on this assembly is reversed polarity. The center conductor is grounded and the outer conductor is the positive. If you run LED bulbs you may have to re-wire them.
The left side brake also uses a red/black wire.