I had a closer look at the Concorde center bar and noticed that there are 6 closed sections in a row.
So I "dremeled" 2 holes in the very outer sections on the left and right side of the bar.
I made the holes fitting the standard 5 W 1-filament bulb socket.(You could also build in 2-filament sockets if you want to have additional stop lamps.)
Then I made a wiring harness out of an old Vision trunk lid wiring harness,but in general you only need 2 bulb sockets and some wire.
Now, you have to route the wires inside the trunk.There should already be a plugged hole in your trunk lid which leads right behind the light bar after you remove the plastic plug.(The Vision and the Concorde have the same trunk lid so I guess itīs the same on yours.)
The last step is to hook the 2 new bulbs into the park lamp circuit.Iīd just route the wires to one of the taillamps,then splice it into the wiring there.
And voila-youīre done.