Hi,
I believe you are looking for the courtesy cargo lamp wiring. However, the only way I have that is via the courtesy lamp schematics which includes the interior lighting.
If you look below, I attached everything for the interior lighting system, which includes the cargo lamp. Now, there were three pages of pictures, but I had to cut each one in half to make them readable, so that's why there are six pics below. I did overlap them so you can follow them.
I highlighted the wiring for the cargo lamp. I hope that helps. Also, here is a link that you may find helpful when testing/checking wiring:
https://www.2carpros.com/articles/how-to-check-wiring
I hope this helps. Let me know what you find or if you have other questions.
Take care,
Joe
See pics below.
Images (Click to enlarge)
Aug 13, 2021 at 8:33 PM