So I have to take the jump seat out to change a light bulb? Seriously?
Almost. It is not impossible but cumbersome to do it on a 7-seater D1.
If/when you do it, consider replacing the bulbs with LEDs. Some of the regular incandescent bulbs run long and hot enough to distort the bulb seat in the plastic housing and lose contact (it'll also be a bitch to take out and replace).
If you replace the turn signal bulbs with LEDs, you'll need either an electronic flasher relay or ballast resistors.
As much as I hate the idea of ballast resistors, they are more reliable than any of electronic flashers I've come across so far.