It is for sure a wiring issue then. The cover on the map lights comes off real easy, just a few parts to pop out. The whole map light assembly isn't hard to take out either, just two screws if I remember right. You could inspect and look for damage there. If not, then it's for sure a problem at the fuse block.
The jumper wire was super easy to do, I just took off the dome light and map light, strung some wire under the roof liner with a coat hanger to the map light. All I did was take some small gauge wire and wrap it around the ground end of the terminals (NOT the powered end or you'll blow your fuse). If you want both map lights to be on, then just splice the wire and wrap on both map lights.
I also put LED's in which are much brighter. 5050 SMDs are good but if you can find 5638 SMD those are by far the brighest. I fit some 3x5 5638 panels (~800 lumens) in the dome light and cargo light and it's about 10x brighter than my tired old bulbs.
Heck, I forgot I've still got 6 of these guys in my garage, 4 of them are yours (enough to replace all bulbs) if you want them.
http://www.amazon.com/gp/product/B00NWGV2W4?psc=1&redirect=true&ref_=oh_aui_detailpage_o06_s00