Thanks for the link.
I had found an Factory Service Manual for the Maxima. Section EL had some great info on the electrical system and I used it to try to determine the problem over the weekend. It was fuse #40 but the problem was that the fuse was missing entirely. Previously, I looked in the fusebox and saw 40 stamped on it. I saw a 7.5A fuse next to the stamped number and assumed it was #40. However, it was not #40 but the
7.5A fuse on the other side (#26). I inserted a fuse and the items worked again.
Unfortunately, keyless entry still does not work entirely. I tried resetting the stored remote codes but that didn't help. I got the expected response during this procedure, the hazard warning flashed 2 times as expected after pressing the lock button on my remote during the ID code entry state. This confirms that my remote is transmitting and the control unit is responding. However, this procedure is done while the key is in the ignition and in ACC mode. Maybe it is still a constant power problem. According to the FSM fuse #11, 37, 40, & 65 supply constant power. I think #65 is under the hood. I am going to check them and then follow the diagnostic procedure for a non functioning multi-remote as outlined in the FSM.