Well got all the outside lights working on the Mav today. Found two bad grounds behind the grill. Sanded and tightned. Seemed to get all but the front passenger turn sig and parking light working. Took off the front grill to get inside the lens housing (why would you make it that hard to get in?) The bulb looked good, but was corroded to the socket. Took about 15 min to get the bulb loose. Multimeter showed voltage good to the socket. The filaments in the bulb were good. However, the nipples (?) on the back were smashed flat. I figured they were not making contact. Went to AutoZone and got new bulb. Presto, all outside lights were working.

Here is my mechanic taking the front grill back off to put on the lens.