Update to those having to replace their Propane monitor
So as stated I received and installed the new combo Propane gas and CO monitor. After the install I did not have power to the unit and found by searching that I blew the inline one amp fuse. It is a bear to get at in the 27 FB as it is located in the front storage electric DC relay for the cut off switch and bus bar distribution, partitioned off with a plywood panel held by a couple of L brackets so freed up the forward end bracket only. The fuse was zip tied to a bundle of other wires which had to be free in order to get to the fuse holder then unscrewed the positive lead end from the bus bar,,, then I was able to pull the fuse holder out from the front hatch and get a couple of pliers and gently squeeze it apart (yes it was not very pliable ).
I purchased a "slow Blow" one Amp fuse to replace and so hopefully it shouldn't happen again. All is good and works fine now.
I know I could have moved the fuse but by the time I got to it I was not going to add one more damn step to the program and yes I could have placed the wire on the relay side to be able to place it in store mode but did not do that either ( I might go in there again and do that
or not). I do have a 160watt Go Power solar system keeps batts up.